39688319952 has 160 divisors (see below), whose sum is σ = 123882249600. Its totient is φ = 12114634752.

The previous prime is 39688319927. The next prime is 39688319977. The reversal of 39688319952 is 25991388693.

39688319952 is a `hidden beast` number, since 396 + 8 + 8 + 3 + 199 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (39688319927) and next prime (39688319977).

It is a super-2 number, since 2×39688319952² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39688319952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198699 + ... + 344757.

It is an arithmetic number, because the mean of its divisors is an integer number (774264060).

Almost surely, 2^39688319952 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 39688319952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61941124800).

39688319952 is an abundant number, since it is smaller than the sum of its proper divisors (84193929648).

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

39688319952 is a wasteful number, since it uses less digits than its factorization.

39688319952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146130 (or 146118 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 39688319952 in words is "thirty-nine billion, six hundred eighty-eight million, three hundred nineteen thousand, nine hundred fifty-two".