215430768175872 has 36 divisors (see below), whose sum is σ = 573360013220120. Its totient is φ = 71810256058368.

The previous prime is 215430768175811. The next prime is 215430768175907. The reversal of 215430768175872 is 278571867034512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140254405597 + ... + 140254407132.

Almost surely, 2^{215430768175872} is an apocalyptic number.

It is an amenable number.

215430768175872 is an abundant number, since it is smaller than the sum of its proper divisors (357929245044248).

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

215430768175872 is an equidigital number, since it uses as much as digits as its factorization.

215430768175872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280508812748 (or 280508812734 counting only the distinct ones).

The product of its (nonzero) digits is 158054400, while the sum is 66.

The spelling of 215430768175872 in words is "two hundred fifteen trillion, four hundred thirty billion, seven hundred sixty-eight million, one hundred seventy-five thousand, eight hundred seventy-two".