7981037976 has 64 divisors (see below), whose sum is σ = 20254924800. Its totient is φ = 2620268288.

The previous prime is 7981037971. The next prime is 7981038001. The reversal of 7981037976 is 6797301897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981037971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554665 + ... + 568871.

It is an arithmetic number, because the mean of its divisors is an integer number (316483200).

Almost surely, 2^7981037976 is an apocalyptic number.

It is an amenable number.

7981037976 is an abundant number, since it is smaller than the sum of its proper divisors (12273886824).

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

7981037976 is a wasteful number, since it uses less digits than its factorization.

7981037976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14568 (or 14564 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 57.

The square root of 7981037976 is about 89336.6552765437. The cubic root of 7981037976 is about 1998.4185812202.

The spelling of 7981037976 in words is "seven billion, nine hundred eighty-one million, thirty-seven thousand, nine hundred seventy-six".