640017167364 has 24 divisors (see below), whose sum is σ = 1659303767520. Its totient is φ = 213339055752.

The previous prime is 640017167359. The next prime is 640017167381. The reversal of 640017167364 is 463761710046.

640017167364 is a `hidden beast` number, since 6 + 400 + 171 + 6 + 73 + 6 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963042334 + ... + 2963042549.

It is an arithmetic number, because the mean of its divisors is an integer number (69137656980).

Almost surely, 2^640017167364 is an apocalyptic number.

It is an amenable number.

640017167364 is an abundant number, since it is smaller than the sum of its proper divisors (1019286600156).

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

640017167364 is a wasteful number, since it uses less digits than its factorization.

640017167364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926084896 (or 5926084888 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 640017167364 in words is "six hundred forty billion, seventeen million, one hundred sixty-seven thousand, three hundred sixty-four".