64722564966 has 16 divisors (see below), whose sum is σ = 129452007744. Its totient is φ = 21573042024.

The previous prime is 64722564943. The next prime is 64722564979. The reversal of 64722564966 is 66946522746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159936 + ... + 393731.

It is an arithmetic number, because the mean of its divisors is an integer number (8090750484).

Almost surely, 2^64722564966 is an apocalyptic number.

64722564966 is an abundant number, since it is smaller than the sum of its proper divisors (64729442778).

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

64722564966 is a wasteful number, since it uses less digits than its factorization.

64722564966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573155.

The product of its digits is 26127360, while the sum is 57.

The spelling of 64722564966 in words is "sixty-four billion, seven hundred twenty-two million, five hundred sixty-four thousand, nine hundred sixty-six".