38988406575 has 18 divisors (see below), whose sum is σ = 69832568624. Its totient is φ = 20793816720.

The previous prime is 38988406571. The next prime is 38988406591. The reversal of 38988406575 is 57560488983.

38988406575 is a `hidden beast` number, since 3 + 89 + 88 + 406 + 5 + 75 = 666.

It is not a de Polignac number, because 38988406575 - 2² = 38988406571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38988406571) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86640679 + ... + 86641128.

Almost surely, 2^38988406575 is an apocalyptic number.

38988406575 is a deficient number, since it is larger than the sum of its proper divisors (30844162049).

38988406575 is a wasteful number, since it uses less digits than its factorization.

38988406575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173281823 (or 173281815 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 38988406575 in words is "thirty-eight billion, nine hundred eighty-eight million, four hundred six thousand, five hundred seventy-five".