38921864712 has 32 divisors (see below), whose sum is σ = 97309555200. Its totient is φ = 12973302464.

The previous prime is 38921864687. The next prime is 38921864741. The reversal of 38921864712 is 21746812983.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801214 + ... + 848402.

It is an arithmetic number, because the mean of its divisors is an integer number (3040923600).

Almost surely, 2^38921864712 is an apocalyptic number.

It is an amenable number.

38921864712 is an abundant number, since it is smaller than the sum of its proper divisors (58387690488).

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

38921864712 is a wasteful number, since it uses less digits than its factorization.

38921864712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81565 (or 81561 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The spelling of 38921864712 in words is "thirty-eight billion, nine hundred twenty-one million, eight hundred sixty-four thousand, seven hundred twelve".