38449997556 has 48 divisors (see below), whose sum is σ = 91451420928. Its totient is φ = 12569065600.

The previous prime is 38449997543. The next prime is 38449997557. The reversal of 38449997556 is 65579994483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38449997557) 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, 1501621 + ... + 1527011.

It is an arithmetic number, because the mean of its divisors is an integer number (1905237936).

Almost surely, 2^38449997556 is an apocalyptic number.

It is an amenable number.

38449997556 is an abundant number, since it is smaller than the sum of its proper divisors (53001423372).

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

38449997556 is a wasteful number, since it uses less digits than its factorization.

38449997556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832 (or 27830 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 69.

The spelling of 38449997556 in words is "thirty-eight billion, four hundred forty-nine million, nine hundred ninety-seven thousand, five hundred fifty-six".