64872990734 has 32 divisors (see below), whose sum is σ = 98894990880. Its totient is φ = 31911639552.

The previous prime is 64872990733. The next prime is 64872990757. The reversal of 64872990734 is 43709927846.

64872990734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64872990733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69234314 + ... + 69235250.

It is an arithmetic number, because the mean of its divisors is an integer number (3090468465).

Almost surely, 2^64872990734 is an apocalyptic number.

64872990734 is a deficient number, since it is larger than the sum of its proper divisors (34022000146).

64872990734 is a wasteful number, since it uses less digits than its factorization.

64872990734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 64872990734 in words is "sixty-four billion, eight hundred seventy-two million, nine hundred ninety thousand, seven hundred thirty-four".