64625493312 has 84 divisors (see below), whose sum is σ = 189178606656. Its totient is φ = 21083485440.

The previous prime is 64625493259. The next prime is 64625493389. The reversal of 64625493312 is 21339452646.

64625493312 is a `hidden beast` number, since 6 + 4 + 62 + 549 + 33 + 12 = 666.

64625493312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1166514 + ... + 1220657.

Almost surely, 2^64625493312 is an apocalyptic number.

It is an amenable number.

64625493312 is an abundant number, since it is smaller than the sum of its proper divisors (124553113344).

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

64625493312 is a wasteful number, since it uses less digits than its factorization.

64625493312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387236 (or 2387223 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 64625493312 in words is "sixty-four billion, six hundred twenty-five million, four hundred ninety-three thousand, three hundred twelve".