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18372910090900 = 22521014014999091
BaseRepresentation
bin1000010110101110001101…
…10001111000101010010100
32102001102200200202001112211
410023113012301320222110
54402010204440402100
6103024222014323204
73604253561004661
oct413270661705224
972042620661484
1018372910090900
1159439a8846a22
1220889624b9504
13a33733b8a6b1
14477379c06a68
1521cdc53ac1ba
hex10b5c6c78a94

18372910090900 has 144 divisors (see below), whose sum is σ = 40449707928000. Its totient is φ = 7242912000000.

The previous prime is 18372910090861. The next prime is 18372910090907. The reversal of 18372910090900 is 909001927381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18372910090907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2020995355 + ... + 2021004445.

It is an arithmetic number, because the mean of its divisors is an integer number (280900749500).

Almost surely, 218372910090900 is an apocalyptic number.

18372910090900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18372910090900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20224853964000).

18372910090900 is an abundant number, since it is smaller than the sum of its proper divisors (22076797837100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18372910090900 is a wasteful number, since it uses less digits than its factorization.

18372910090900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10106 (or 10099 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The spelling of 18372910090900 in words is "eighteen trillion, three hundred seventy-two billion, nine hundred ten million, ninety thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 101 202 401 404 499 505 802 998 1010 1604 1996 2005 2020 2495 2525 4010 4990 5050 8020 9091 9980 10025 10100 12475 18182 20050 24950 36364 40100 40501 45455 49900 50399 81002 90910 100798 162004 181820 200099 201596 202505 227275 251995 400198 405010 454550 503990 800396 810020 909100 918191 1000495 1007980 1012525 1259975 1836382 2000990 2025050 2519950 3645491 3672764 4001980 4050100 4536409 4590955 5002475 5039900 7290982 9072818 9181910 10004950 14581964 18145636 18227455 18363820 20009900 20209999 22682045 22954775 36454910 40419998 45364090 45909550 72909820 80839996 90728180 91137275 91819100 101049995 113410225 182274550 202099990 226820450 364549100 368194591 404199980 453640900 458177309 505249975 736389182 916354618 1010499950 1472778364 1819100009 1832709236 1840972955 2020999900 2290886545 3638200018 3681945910 4581773090 7276400036 7363891820 9095500045 9163546180 9204864775 11454432725 18191000090 18409729550 22908865450 36382000180 36819459100 45477500225 45817730900 90955000450 181910000900 183729100909 367458201818 734916403636 918645504545 1837291009090 3674582018180 4593227522725 9186455045450 18372910090900