7977298056 has 64 divisors (see below), whose sum is σ = 24545539200. Its totient is φ = 2103902208.

The previous prime is 7977298033. The next prime is 7977298141. The reversal of 7977298056 is 6508927797.

It is a super-2 number, since 2×7977298056² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1824121 + ... + 1828488.

It is an arithmetic number, because the mean of its divisors is an integer number (383524050).

Almost surely, 2^7977298056 is an apocalyptic number.

It is an amenable number.

7977298056 is an abundant number, since it is smaller than the sum of its proper divisors (16568241144).

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

7977298056 is a wasteful number, since it uses less digits than its factorization.

7977298056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652638 (or 3652634 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 60.

The square root of 7977298056 is about 89315.7212141289. The cubic root of 7977298056 is about 1998.1063789989.

The spelling of 7977298056 in words is "seven billion, nine hundred seventy-seven million, two hundred ninety-eight thousand, fifty-six".