664455704725134 has 24 divisors (see below), whose sum is σ = 1645318887891120. Its totient is φ = 189844487064288.

The previous prime is 664455704725093. The next prime is 664455704725151. The reversal of 664455704725134 is 431527407554466.

664455704725134 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 5 + 5 + 70 + 47 + 2 + 513 + 4 = 666.

It is a super-2 number, since 2×664455704725134² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2636728986879 + ... + 2636728987130.

It is an arithmetic number, because the mean of its divisors is an integer number (68554953662130).

Almost surely, 2^{664455704725134} is an apocalyptic number.

664455704725134 is an abundant number, since it is smaller than the sum of its proper divisors (980863183165986).

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

664455704725134 is a wasteful number, since it uses less digits than its factorization.

664455704725134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273457974024 (or 5273457974021 counting only the distinct ones).

The product of its (nonzero) digits is 338688000, while the sum is 63.

The spelling of 664455704725134 in words is "six hundred sixty-four trillion, four hundred fifty-five billion, seven hundred four million, seven hundred twenty-five thousand, one hundred thirty-four".