64002691072 has 104 divisors (see below), whose sum is σ = 135041412960. Its totient is φ = 30246174720.

The previous prime is 64002691021. The next prime is 64002691133. The reversal of 64002691072 is 27019620046.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 49884543 + ... + 49885825.

Almost surely, 2^64002691072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64002691072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67520706480).

64002691072 is an abundant number, since it is smaller than the sum of its proper divisors (71038721888).

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

64002691072 is a wasteful number, since it uses less digits than its factorization.

64002691072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 64002691072 in words is "sixty-four billion, two million, six hundred ninety-one thousand, seventy-two".