715966955921 has 48 divisors (see below), whose sum is σ = 859188290688. Its totient is φ = 594507513600.

The previous prime is 715966955911. The next prime is 715966955929. The reversal of 715966955921 is 129559669517.

It is not a de Polignac number, because 715966955921 - 2⁶ = 715966955857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (715966955929) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 357446306 + ... + 357448308.

It is an arithmetic number, because the mean of its divisors is an integer number (17899756056).

Almost surely, 2^715966955921 is an apocalyptic number.

It is an amenable number.

715966955921 is a deficient number, since it is larger than the sum of its proper divisors (143221334767).

715966955921 is a wasteful number, since it uses less digits than its factorization.

715966955921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222 (or 3215 counting only the distinct ones).

The product of its digits is 45927000, while the sum is 65.

The spelling of 715966955921 in words is "seven hundred fifteen billion, nine hundred sixty-six million, nine hundred fifty-five thousand, nine hundred twenty-one".