64040583168 has 90 divisors (see below), whose sum is σ = 185000909184. Its totient is φ = 21346811904.

The previous prime is 64040583143. The next prime is 64040583181. The reversal of 64040583168 is 86138504046.

64040583168 is a `hidden beast` number, since 6 + 4 + 0 + 4 + 0 + 583 + 1 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69696 + ... + 364607.

Almost surely, 2^64040583168 is an apocalyptic number.

It is an amenable number.

64040583168 is an abundant number, since it is smaller than the sum of its proper divisors (120960326016).

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

64040583168 is an equidigital number, since it uses as much as digits as its factorization.

64040583168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434337 (or 434308 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 64040583168 in words is "sixty-four billion, forty million, five hundred eighty-three thousand, one hundred sixty-eight".