39390313664 has 84 divisors (see below), whose sum is σ = 86516925264. Its totient is φ = 17688278016.

The previous prime is 39390313631. The next prime is 39390313693. The reversal of 39390313664 is 46631309393.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1121717 + ... + 1156299.

It is an arithmetic number, because the mean of its divisors is an integer number (1029963396).

Almost surely, 2^39390313664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39390313664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43258462632).

39390313664 is an abundant number, since it is smaller than the sum of its proper divisors (47126611600).

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

39390313664 is a wasteful number, since it uses less digits than its factorization.

39390313664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34682 (or 34635 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 47.

The spelling of 39390313664 in words is "thirty-nine billion, three hundred ninety million, three hundred thirteen thousand, six hundred sixty-four".