65979697956 has 24 divisors (see below), whose sum is σ = 154041513024. Its totient is φ = 21980534880.

The previous prime is 65979697909. The next prime is 65979697957.

65979697956 is nontrivially palindromic in base 10.

65979697956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65979697957) 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, 1565560 + ... + 1607151.

It is an arithmetic number, because the mean of its divisors is an integer number (6418396376).

Almost surely, 2^65979697956 is an apocalyptic number.

It is an amenable number.

65979697956 is an abundant number, since it is smaller than the sum of its proper divisors (88061815068).

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

65979697956 is a wasteful number, since it uses less digits than its factorization.

65979697956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174451 (or 3174449 counting only the distinct ones).

The product of its digits is 1736040600, while the sum is 78.

The spelling of 65979697956 in words is "sixty-five billion, nine hundred seventy-nine million, six hundred ninety-seven thousand, nine hundred fifty-six".