64673884032 has 64 divisors (see below), whose sum is σ = 171874679760. Its totient is φ = 21547335680.

The previous prime is 64673884031. The next prime is 64673884097. The reversal of 64673884032 is 23048837646.

64673884032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×64673884032² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64673884031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758638 + ... + 839570.

Almost surely, 2^64673884032 is an apocalyptic number.

It is an amenable number.

64673884032 is an abundant number, since it is smaller than the sum of its proper divisors (107200795728).

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

64673884032 is a wasteful number, since it uses less digits than its factorization.

64673884032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83031 (or 83019 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 64673884032 in words is "sixty-four billion, six hundred seventy-three million, eight hundred eighty-four thousand, thirty-two".