39995679737864 has 32 divisors (see below), whose sum is σ = 75840785157600. Its totient is φ = 19771507578240.

The previous prime is 39995679737857. The next prime is 39995679737873. The reversal of 39995679737864 is 46873797659993.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6300299 + ... + 10940069.

It is an arithmetic number, because the mean of its divisors is an integer number (2370024536175).

Almost surely, 2^{39995679737864} is an apocalyptic number.

It is an amenable number.

39995679737864 is a deficient number, since it is larger than the sum of its proper divisors (35845105419736).

39995679737864 is a wasteful number, since it uses less digits than its factorization.

39995679737864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651973 (or 4651969 counting only the distinct ones).

The product of its digits is 116661928320, while the sum is 92.

The spelling of 39995679737864 in words is "thirty-nine trillion, nine hundred ninety-five billion, six hundred seventy-nine million, seven hundred thirty-seven thousand, eight hundred sixty-four".