15442861056 has 88 divisors (see below), whose sum is σ = 47041042560. Its totient is φ = 4412239872.

The previous prime is 15442861003. The next prime is 15442861073. The reversal of 15442861056 is 65016824451.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 15442860999 and 15442861017.

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, 337566 + ... + 380573.

Almost surely, 2^15442861056 is an apocalyptic number.

15442861056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15442861056 is an abundant number, since it is smaller than the sum of its proper divisors (31598181504).

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

15442861056 is an equidigital number, since it uses as much as digits as its factorization.

15442861056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718169 (or 718151 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 15442861056 in words is "fifteen billion, four hundred forty-two million, eight hundred sixty-one thousand, fifty-six".