39172664363864 has 128 divisors (see below), whose sum is σ = 79167513231360. Its totient is φ = 18127267095168.

The previous prime is 39172664363839. The next prime is 39172664363897. The reversal of 39172664363864 is 46836346627193.

It is a junction number, because it is equal to n+sod(n) for n = 39172664363794 and 39172664363803.

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, 450595169 + ... + 450682095.

It is an arithmetic number, because the mean of its divisors is an integer number (618496197120).

Almost surely, 2^{39172664363864} is an apocalyptic number.

It is an amenable number.

39172664363864 is an abundant number, since it is smaller than the sum of its proper divisors (39994848867496).

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

39172664363864 is a wasteful number, since it uses less digits than its factorization.

39172664363864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87597 (or 87593 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 68.

The spelling of 39172664363864 in words is "thirty-nine trillion, one hundred seventy-two billion, six hundred sixty-four million, three hundred sixty-three thousand, eight hundred sixty-four".