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88851115120 = 2451987766653
BaseRepresentation
bin101001010111111110…
…0000110110001110000
322111100012001022100111
41102233330012301300
52423431341140440
6104452335431104
76263546005645
oct1225774066160
9274305038314
1088851115120
1134755157959
1215278085494
1384bcab6941
14442c4b5dcc
1524a058b4ea
hex14aff06c70

88851115120 has 80 divisors (see below), whose sum is σ = 217702628640. Its totient is φ = 33630999552.

The previous prime is 88851115081. The next prime is 88851115121. The reversal of 88851115120 is 2151115888.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×888511151202 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88851115121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1299714 + ... + 1366366.

It is an arithmetic number, because the mean of its divisors is an integer number (2721282858).

Almost surely, 288851115120 is an apocalyptic number.

88851115120 is a gapful number since it is divisible by the number (80) 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 88851115120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108851314320).

88851115120 is an abundant number, since it is smaller than the sum of its proper divisors (128851513520).

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

88851115120 is a wasteful number, since it uses less digits than its factorization.

88851115120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67562 (or 67556 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 40.

The spelling of 88851115120 in words is "eighty-eight billion, eight hundred fifty-one million, one hundred fifteen thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 190 304 380 760 877 1520 1754 3508 4385 7016 8770 14032 16663 17540 33326 35080 66652 66653 70160 83315 133304 133306 166630 266608 266612 333260 333265 533224 666520 666530 1066448 1266407 1333040 1333060 2532814 2666120 5065628 5332240 6332035 10131256 12664070 20262512 25328140 50656280 58454681 101312560 116909362 233818724 292273405 467637448 584546810 935274896 1110638939 1169093620 2221277878 2338187240 4442555756 4676374480 5553194695 8885111512 11106389390 17770223024 22212778780 44425557560 88851115120