64604773472 has 24 divisors (see below), whose sum is σ = 127196429976. Its totient is φ = 32300918272.

The previous prime is 64604773423. The next prime is 64604773489. The reversal of 64604773472 is 27437740646.

It is a happy number.

64604773472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64604773472.

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, 1142408 + ... + 1197624.

It is an arithmetic number, because the mean of its divisors is an integer number (5299851249).

Almost surely, 2^64604773472 is an apocalyptic number.

It is an amenable number.

64604773472 is a deficient number, since it is larger than the sum of its proper divisors (62591656504).

64604773472 is a wasteful number, since it uses less digits than its factorization.

64604773472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91790 (or 91782 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 50.

The spelling of 64604773472 in words is "sixty-four billion, six hundred four million, seven hundred seventy-three thousand, four hundred seventy-two".