39554686964 has 144 divisors (see below), whose sum is σ = 82544848848. Its totient is φ = 16427520000.

The previous prime is 39554686939. The next prime is 39554686979. The reversal of 39554686964 is 46968645593.

It can be written as a sum of positive squares in 8 ways, for example, as 926715364 + 38627971600 = 30442^2 + 196540^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39554686964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85801694 + ... + 85802154.

It is an arithmetic number, because the mean of its divisors is an integer number (573228117).

Almost surely, 2^39554686964 is an apocalyptic number.

39554686964 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

39554686964 is an abundant number, since it is smaller than the sum of its proper divisors (42990161884).

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

39554686964 is a wasteful number, since it uses less digits than its factorization.

39554686964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 625 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 65.

The spelling of 39554686964 in words is "thirty-nine billion, five hundred fifty-four million, six hundred eighty-six thousand, nine hundred sixty-four".