64938986271696 has 40 divisors (see below), whose sum is σ = 167768808539584. Its totient is φ = 21645069315840.

The previous prime is 64938986271659. The next prime is 64938986271751. The reversal of 64938986271696 is 69617268983946.

It is a congruent number.

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, 38523781 + ... + 40174116.

Almost surely, 2^{64938986271696} is an apocalyptic number.

It is an amenable number.

64938986271696 is an abundant number, since it is smaller than the sum of its proper divisors (102829822267888).

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

64938986271696 is a wasteful number, since it uses less digits than its factorization.

64938986271696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78715099 (or 78715093 counting only the distinct ones).

The product of its digits is 10158317568, while the sum is 84.

The spelling of 64938986271696 in words is "sixty-four trillion, nine hundred thirty-eight billion, nine hundred eighty-six million, two hundred seventy-one thousand, six hundred ninety-six".