15872871585870 has 64 divisors (see below), whose sum is σ = 45583631231040. Its totient is φ = 3907168389504.

The previous prime is 15872871585859. The next prime is 15872871585917. The reversal of 15872871585870 is 7858517827851.

15872871585870 is a `hidden beast` number, since 1 + 5 + 8 + 7 + 28 + 7 + 15 + 8 + 587 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2261089309 + ... + 2261096328.

It is an arithmetic number, because the mean of its divisors is an integer number (712244237985).

Almost surely, 2^{15872871585870} is an apocalyptic number.

15872871585870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15872871585870 is an abundant number, since it is smaller than the sum of its proper divisors (29710759645170).

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

15872871585870 is a wasteful number, since it uses less digits than its factorization.

15872871585870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522185666 (or 4522185660 counting only the distinct ones).

The product of its (nonzero) digits is 351232000, while the sum is 72.

The spelling of 15872871585870 in words is "fifteen trillion, eight hundred seventy-two billion, eight hundred seventy-one million, five hundred eighty-five thousand, eight hundred seventy".