64939203276 has 48 divisors (see below), whose sum is σ = 159544680960. Its totient is φ = 20501346240.

The previous prime is 64939203253. The next prime is 64939203323. The reversal of 64939203276 is 67230293946.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811546 + ... + 887966.

It is an arithmetic number, because the mean of its divisors is an integer number (3323847520).

Almost surely, 2^64939203276 is an apocalyptic number.

It is an amenable number.

64939203276 is an abundant number, since it is smaller than the sum of its proper divisors (94605477684).

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

64939203276 is a wasteful number, since it uses less digits than its factorization.

64939203276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80174 (or 80172 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 64939203276 in words is "sixty-four billion, nine hundred thirty-nine million, two hundred three thousand, two hundred seventy-six".