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66100553200 = 24521115022853
BaseRepresentation
bin111101100011111001…
…100110010111110000
320022121122212000111001
4331203321212113300
52040333220200300
650211032131344
74530014301043
oct754371462760
9208548760431
1066100553200
1126040047a70
1210988b36b54
136305601496
1432b0b98c5a
151abd0ee16a
hexf63e665f0

66100553200 has 60 divisors (see below), whose sum is σ = 173243552328. Its totient is φ = 24036563200.

The previous prime is 66100553173. The next prime is 66100553201. The reversal of 66100553200 is 235500166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66100553201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7507027 + ... + 7515826.

Almost surely, 266100553200 is an apocalyptic number.

It is an amenable number.

66100553200 is an abundant number, since it is smaller than the sum of its proper divisors (107142999128).

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

66100553200 is a wasteful number, since it uses less digits than its factorization.

66100553200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15022882 (or 15022871 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 66100553200 in words is "sixty-six billion, one hundred million, five hundred fifty-three thousand, two hundred".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 80 88 100 110 176 200 220 275 400 440 550 880 1100 2200 4400 15022853 30045706 60091412 75114265 120182824 150228530 165251383 240365648 300457060 330502766 375571325 600914120 661005532 751142650 826256915 1201828240 1322011064 1502285300 1652513830 2644022128 3004570600 3305027660 4131284575 6009141200 6610055320 8262569150 13220110640 16525138300 33050276600 66100553200