64380334028 has 48 divisors (see below), whose sum is σ = 115924451328. Its totient is φ = 31275720000.

The previous prime is 64380334021. The next prime is 64380334097. The reversal of 64380334028 is 82043308346.

It is not an unprimeable number, because it can be changed into a prime (64380334021) 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, 5440358 + ... + 5452178.

It is an arithmetic number, because the mean of its divisors is an integer number (2415092736).

Almost surely, 2^64380334028 is an apocalyptic number.

It is an amenable number.

64380334028 is a deficient number, since it is larger than the sum of its proper divisors (51544117300).

64380334028 is a wasteful number, since it uses less digits than its factorization.

64380334028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174 (or 12172 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 64380334028 in words is "sixty-four billion, three hundred eighty million, three hundred thirty-four thousand, twenty-eight".