38640006372 has 48 divisors (see below), whose sum is σ = 100212178752. Its totient is φ = 11488164480.

The previous prime is 38640006329. The next prime is 38640006373. The reversal of 38640006372 is 27360004683.

It is a self number, because there is not a number n which added to its sum of digits gives 38640006372.

It is not an unprimeable number, because it can be changed into a prime (38640006373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2754583 + ... + 2768574.

It is an arithmetic number, because the mean of its divisors is an integer number (2087753724).

Almost surely, 2^38640006372 is an apocalyptic number.

It is an amenable number.

38640006372 is an abundant number, since it is smaller than the sum of its proper divisors (61572172380).

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

38640006372 is a wasteful number, since it uses less digits than its factorization.

38640006372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523228 (or 5523226 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 38640006372 in words is "thirty-eight billion, six hundred forty million, six thousand, three hundred seventy-two".