38877637872 has 40 divisors (see below), whose sum is σ = 100583214544. Its totient is φ = 12939945984.

The previous prime is 38877637849. The next prime is 38877637879. The reversal of 38877637872 is 27873677883.

It is a happy number.

It is a super-2 number, since 2×38877637872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38877637879) 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, 569443 + ... + 634050.

Almost surely, 2^38877637872 is an apocalyptic number.

It is an amenable number.

38877637872 is an abundant number, since it is smaller than the sum of its proper divisors (61705576672).

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

38877637872 is a wasteful number, since it uses less digits than its factorization.

38877637872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204177 (or 1204171 counting only the distinct ones).

The product of its digits is 132765696, while the sum is 66.

The spelling of 38877637872 in words is "thirty-eight billion, eight hundred seventy-seven million, six hundred thirty-seven thousand, eight hundred seventy-two".