64464452768 has 24 divisors (see below), whose sum is σ = 126920117268. Its totient is φ = 32230772224.

The previous prime is 64464452713. The next prime is 64464452827. The reversal of 64464452768 is 86725446446.

It can be written as a sum of positive squares in 2 ways, for example, as 57107616784 + 7356835984 = 238972^2 + 85772^2 .

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, 1200380 + ... + 1252932.

Almost surely, 2^64464452768 is an apocalyptic number.

It is an amenable number.

64464452768 is a deficient number, since it is larger than the sum of its proper divisors (62455664500).

64464452768 is a wasteful number, since it uses less digits than its factorization.

64464452768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90896 (or 90888 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 56.

The spelling of 64464452768 in words is "sixty-four billion, four hundred sixty-four million, four hundred fifty-two thousand, seven hundred sixty-eight".