15870647020970 has 96 divisors (see below), whose sum is σ = 34983447307200. Its totient is φ = 5154498768384.

The previous prime is 15870647020961. The next prime is 15870647020979. The reversal of 15870647020970 is 7902074607851.

It is an interprime number because it is at equal distance from previous prime (15870647020961) and next prime (15870647020979).

It is not an unprimeable number, because it can be changed into a prime (15870647020979) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108229961 + ... + 108376499.

It is an arithmetic number, because the mean of its divisors is an integer number (364410909450).

Almost surely, 2^{15870647020970} is an apocalyptic number.

15870647020970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15870647020970 is an abundant number, since it is smaller than the sum of its proper divisors (19112800286230).

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

15870647020970 is a wasteful number, since it uses less digits than its factorization.

15870647020970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158212 (or 158205 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 15870647020970 in words is "fifteen trillion, eight hundred seventy billion, six hundred forty-seven million, twenty thousand, nine hundred seventy".