38072775820 has 24 divisors (see below), whose sum is σ = 81653955264. Its totient is φ = 14905086336.

The previous prime is 38072775803. The next prime is 38072775821. The reversal of 38072775820 is 2857727083.

It is not an unprimeable number, because it can be changed into a prime (38072775821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20250537 + ... + 20252416.

It is an arithmetic number, because the mean of its divisors is an integer number (3402248136).

Almost surely, 2^38072775820 is an apocalyptic number.

It is an amenable number.

38072775820 is an abundant number, since it is smaller than the sum of its proper divisors (43581179444).

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

38072775820 is a wasteful number, since it uses less digits than its factorization.

38072775820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40503009 (or 40503007 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 38072775820 in words is "thirty-eight billion, seventy-two million, seven hundred seventy-five thousand, eight hundred twenty".