65931905968 has 40 divisors (see below), whose sum is σ = 128441064960. Its totient is φ = 32786053440.

The previous prime is 65931905951. The next prime is 65931905983. The reversal of 65931905968 is 86950913956.

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 7 ways as a sum of consecutive naturals, for example, 5256921 + ... + 5269447.

It is an arithmetic number, because the mean of its divisors is an integer number (3211026624).

Almost surely, 2^65931905968 is an apocalyptic number.

It is an amenable number.

65931905968 is a deficient number, since it is larger than the sum of its proper divisors (62509158992).

65931905968 is a wasteful number, since it uses less digits than its factorization.

65931905968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305 (or 14299 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 61.

The spelling of 65931905968 in words is "sixty-five billion, nine hundred thirty-one million, nine hundred five thousand, nine hundred sixty-eight".