15407197056 has 64 divisors (see below), whose sum is σ = 45472640400. Its totient is φ = 5135731200.

The previous prime is 15407197049. The next prime is 15407197081. The reversal of 15407197056 is 65079170451.

15407197056 is a `hidden beast` number, since 1 + 5 + 407 + 197 + 0 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×15407197056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 2225595 + ... + 2232506.

Almost surely, 2^15407197056 is an apocalyptic number.

15407197056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15407197056 is an abundant number, since it is smaller than the sum of its proper divisors (30065443344).

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

15407197056 is an equidigital number, since it uses as much as digits as its factorization.

15407197056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458124 (or 4458106 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 15407197056 in words is "fifteen billion, four hundred seven million, one hundred ninety-seven thousand, fifty-six".