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13137755808 = 253197202717
BaseRepresentation
bin11000011110001001…
…00011111010100000
31020220121000010220110
430033010203322200
5203401231141213
610011351411320
7643365040032
oct141704437240
936817003813
1013137755808
115631a14431
122667983b40
131314aa4708
148c8b87c52
1551d5b35c3
hex30f123ea0

13137755808 has 48 divisors (see below), whose sum is σ = 36301698720. Its totient is φ = 4148764416.

The previous prime is 13137755783. The next prime is 13137755819. The reversal of 13137755808 is 80855773131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3599535 + ... + 3603182.

It is an arithmetic number, because the mean of its divisors is an integer number (756285390).

Almost surely, 213137755808 is an apocalyptic number.

It is an amenable number.

13137755808 is an abundant number, since it is smaller than the sum of its proper divisors (23163942912).

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

13137755808 is a wasteful number, since it uses less digits than its factorization.

13137755808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202749 (or 7202741 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 13137755808 in words is "thirteen billion, one hundred thirty-seven million, seven hundred fifty-five thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 12 16 19 24 32 38 48 57 76 96 114 152 228 304 456 608 912 1824 7202717 14405434 21608151 28810868 43216302 57621736 86432604 115243472 136851623 172865208 230486944 273703246 345730416 410554869 547406492 691460832 821109738 1094812984 1642219476 2189625968 3284438952 4379251936 6568877904 13137755808