64080437838 has 64 divisors (see below), whose sum is σ = 134624415744. Its totient is φ = 20309184000.

The previous prime is 64080437797. The next prime is 64080437843. The reversal of 64080437838 is 83873408046.

It is a super-2 number, since 2×64080437838² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3861078 + ... + 3877638.

It is an arithmetic number, because the mean of its divisors is an integer number (2103506496).

Almost surely, 2^64080437838 is an apocalyptic number.

64080437838 is an abundant number, since it is smaller than the sum of its proper divisors (70543977906).

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

64080437838 is a wasteful number, since it uses less digits than its factorization.

64080437838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16961.

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 64080437838 in words is "sixty-four billion, eighty million, four hundred thirty-seven thousand, eight hundred thirty-eight".