64764663384 has 16 divisors (see below), whose sum is σ = 161911658520. Its totient is φ = 21588221120.

The previous prime is 64764663371. The next prime is 64764663437. The reversal of 64764663384 is 48336646746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349263797 + ... + 1349263844.

Almost surely, 2^64764663384 is an apocalyptic number.

It is an amenable number.

64764663384 is an abundant number, since it is smaller than the sum of its proper divisors (97146995136).

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

64764663384 is a wasteful number, since it uses less digits than its factorization.

64764663384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698527650 (or 2698527646 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 57.

The spelling of 64764663384 in words is "sixty-four billion, seven hundred sixty-four million, six hundred sixty-three thousand, three hundred eighty-four".