64686456204 has 48 divisors (see below), whose sum is σ = 154688636256. Its totient is φ = 21026419200.

The previous prime is 64686456181. The next prime is 64686456217. The reversal of 64686456204 is 40265468646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063134 + ... + 1122330.

It is an arithmetic number, because the mean of its divisors is an integer number (3222679922).

Almost surely, 2^64686456204 is an apocalyptic number.

It is an amenable number.

64686456204 is an abundant number, since it is smaller than the sum of its proper divisors (90002180052).

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

64686456204 is a wasteful number, since it uses less digits than its factorization.

64686456204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61466 (or 61464 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 51.

The spelling of 64686456204 in words is "sixty-four billion, six hundred eighty-six million, four hundred fifty-six thousand, two hundred four".