64439366382 has 24 divisors (see below), whose sum is σ = 139623377400. Its totient is φ = 21479058000.

The previous prime is 64439366357. The next prime is 64439366401. The reversal of 64439366382 is 28366393446.

64439366382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-5 number, since 5×64439366382⁵ (a number of 55 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855757 + ... + 928007.

It is an arithmetic number, because the mean of its divisors is an integer number (5817640725).

Almost surely, 2^64439366382 is an apocalyptic number.

64439366382 is an abundant number, since it is smaller than the sum of its proper divisors (75184011018).

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

64439366382 is a wasteful number, since it uses less digits than its factorization.

64439366382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121808 (or 121805 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 54.

The spelling of 64439366382 in words is "sixty-four billion, four hundred thirty-nine million, three hundred sixty-six thousand, three hundred eighty-two".