39965346368 has 112 divisors (see below), whose sum is σ = 84018729600. Its totient is φ = 18833203200.

The previous prime is 39965346329. The next prime is 39965346373. The reversal of 39965346368 is 86364356993.

It is a self number, because there is not a number n which added to its sum of digits gives 39965346368.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16533896 + ... + 16536312.

Almost surely, 2^39965346368 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 39965346368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42009364800).

39965346368 is an abundant number, since it is smaller than the sum of its proper divisors (44053383232).

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

39965346368 is a wasteful number, since it uses less digits than its factorization.

39965346368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2658 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 62.

The spelling of 39965346368 in words is "thirty-nine billion, nine hundred sixty-five million, three hundred forty-six thousand, three hundred sixty-eight".