64976952392 has 32 divisors (see below), whose sum is σ = 133397884800. Its totient is φ = 29425982400.

The previous prime is 64976952389. The next prime is 64976952427. The reversal of 64976952392 is 29325967946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338467 + ... + 1386162.

It is an arithmetic number, because the mean of its divisors is an integer number (4168683900).

Almost surely, 2^64976952392 is an apocalyptic number.

It is an amenable number.

64976952392 is an abundant number, since it is smaller than the sum of its proper divisors (68420932408).

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

64976952392 is a wasteful number, since it uses less digits than its factorization.

64976952392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724917 (or 2724913 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 62.

The spelling of 64976952392 in words is "sixty-four billion, nine hundred seventy-six million, nine hundred fifty-two thousand, three hundred ninety-two".