7976927743657 has 4 divisors (see below), whose sum is σ = 7976966495616. Its totient is φ = 7976888991700.

The previous prime is 7976927743639. The next prime is 7976927743703. The reversal of 7976927743657 is 7563477296797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7976927743657 - 2³⁵ = 7942568005289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7976927743957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19065553 + ... + 19479454.

It is an arithmetic number, because the mean of its divisors is an integer number (1994241623904).

Almost surely, 2^{7976927743657} is an apocalyptic number.

It is an amenable number.

7976927743657 is a deficient number, since it is larger than the sum of its proper divisors (38751959).

7976927743657 is a wasteful number, since it uses less digits than its factorization.

7976927743657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38751958.

The product of its digits is 5881105440, while the sum is 79.

The spelling of 7976927743657 in words is "seven trillion, nine hundred seventy-six billion, nine hundred twenty-seven million, seven hundred forty-three thousand, six hundred fifty-seven".