7957911972 has 24 divisors (see below), whose sum is σ = 18963536256. Its totient is φ = 2596198048.

The previous prime is 7957911971. The next prime is 7957912021. The reversal of 7957911972 is 2791197597.

It is not an unprimeable number, because it can be changed into a prime (7957911971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7054323 + ... + 7055450.

It is an arithmetic number, because the mean of its divisors is an integer number (790147344).

Almost surely, 2^7957911972 is an apocalyptic number.

It is an amenable number.

7957911972 is an abundant number, since it is smaller than the sum of its proper divisors (11005624284).

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

7957911972 is a wasteful number, since it uses less digits than its factorization.

7957911972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14109827 (or 14109825 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 57.

The square root of 7957911972 is about 89207.1296029639. The cubic root of 7957911972 is about 1996.4864955912.

The spelling of 7957911972 in words is "seven billion, nine hundred fifty-seven million, nine hundred eleven thousand, nine hundred seventy-two".