64923476432 has 20 divisors (see below), whose sum is σ = 125797201440. Its totient is φ = 32459682528.

The previous prime is 64923476383. The next prime is 64923476447. The reversal of 64923476432 is 23467432946.

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, 150419 + ... + 390477.

It is an arithmetic number, because the mean of its divisors is an integer number (6289860072).

Almost surely, 2^64923476432 is an apocalyptic number.

It is an amenable number.

64923476432 is a deficient number, since it is larger than the sum of its proper divisors (60873725008).

64923476432 is a wasteful number, since it uses less digits than its factorization.

64923476432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256970 (or 256964 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 50.

The spelling of 64923476432 in words is "sixty-four billion, nine hundred twenty-three million, four hundred seventy-six thousand, four hundred thirty-two".