15857442860 has 24 divisors (see below), whose sum is σ = 38057863200. Its totient is φ = 5436837504.

The previous prime is 15857442841. The next prime is 15857442911. The reversal of 15857442860 is 6824475851.

It is a junction number, because it is equal to n+sod(n) for n = 15857442799 and 15857442808.

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, 56633585 + ... + 56633864.

It is an arithmetic number, because the mean of its divisors is an integer number (1585744300).

Almost surely, 2^15857442860 is an apocalyptic number.

15857442860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15857442860 is an abundant number, since it is smaller than the sum of its proper divisors (22200420340).

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

15857442860 is a wasteful number, since it uses less digits than its factorization.

15857442860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113267465 (or 113267463 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 15857442860 in words is "fifteen billion, eight hundred fifty-seven million, four hundred forty-two thousand, eight hundred sixty".