38121504772 has 24 divisors (see below), whose sum is σ = 75625659200. Its totient is φ = 16668511776.

The previous prime is 38121504731. The next prime is 38121504779. The reversal of 38121504772 is 27740512183.

It is not an unprimeable number, because it can be changed into a prime (38121504779) 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, 19291272 + ... + 19293247.

Almost surely, 2^38121504772 is an apocalyptic number.

It is an amenable number.

38121504772 is a deficient number, since it is larger than the sum of its proper divisors (37504154428).

38121504772 is a wasteful number, since it uses less digits than its factorization.

38121504772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38584555 (or 38584553 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 38121504772 in words is "thirty-eight billion, one hundred twenty-one million, five hundred four thousand, seven hundred seventy-two".