7972578807875 has 32 divisors (see below), whose sum is σ = 10854646133760. Its totient is φ = 5798056188000.

The previous prime is 7972578807859. The next prime is 7972578807971. The reversal of 7972578807875 is 5787088752797.

It is not a de Polignac number, because 7972578807875 - 2⁴ = 7972578807859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7972578807875.

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, 56011046 + ... + 56153204.

It is an arithmetic number, because the mean of its divisors is an integer number (339207691680).

Almost surely, 2^{7972578807875} is an apocalyptic number.

7972578807875 is a deficient number, since it is larger than the sum of its proper divisors (2882067325885).

7972578807875 is a wasteful number, since it uses less digits than its factorization.

7972578807875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182972 (or 182962 counting only the distinct ones).

The product of its (nonzero) digits is 3872332800, while the sum is 80.

The spelling of 7972578807875 in words is "seven trillion, nine hundred seventy-two billion, five hundred seventy-eight million, eight hundred seven thousand, eight hundred seventy-five".