38977901217 has 20 divisors (see below), whose sum is σ = 59580351600. Its totient is φ = 25380956664.

The previous prime is 38977901213. The next prime is 38977901233. The reversal of 38977901217 is 71210977983.

It is not a de Polignac number, because 38977901217 - 2² = 38977901213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38977901213) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5591967 + ... + 5598932.

It is an arithmetic number, because the mean of its divisors is an integer number (2979017580).

Almost surely, 2^38977901217 is an apocalyptic number.

It is an amenable number.

38977901217 is a deficient number, since it is larger than the sum of its proper divisors (20602450383).

38977901217 is a wasteful number, since it uses less digits than its factorization.

38977901217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190954 (or 11190945 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 38977901217 in words is "thirty-eight billion, nine hundred seventy-seven million, nine hundred one thousand, two hundred seventeen".