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13399942185 = 365719131211
BaseRepresentation
bin11000111101011001…
…01110010000101001
31021120212100121000000
430132230232100221
5204420341122220
610053355133213
7653030425560
oct143654562051
937525317000
1013399942185
115756a10993
12271b744209
1313571c2b96
14911916bd7
15536603390
hex31eb2e429

13399942185 has 224 divisors, whose sum is σ = 29363051520. Its totient is φ = 5731689600.

The previous prime is 13399942139. The next prime is 13399942201. The reversal of 13399942185 is 58124999331.

13399942185 is a `hidden beast` number, since 1 + 339 + 9 + 94 + 218 + 5 = 666.

13399942185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13399942185 - 212 = 13399938089 is a prime.

It is a super-2 number, since 2×133999421852 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 63506730 + ... + 63506940.

Almost surely, 213399942185 is an apocalyptic number.

13399942185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13399942185 is an abundant number, since it is smaller than the sum of its proper divisors (15963109335).

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

13399942185 is a wasteful number, since it uses less digits than its factorization.

13399942185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 376 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 13399942185 in words is "thirteen billion, three hundred ninety-nine million, nine hundred forty-two thousand, one hundred eighty-five".