38660579975 has 24 divisors (see below), whose sum is σ = 49324999248. Its totient is φ = 30041004800.

The previous prime is 38660579959. The next prime is 38660579977. The reversal of 38660579975 is 57997506683.

It is not a de Polignac number, because 38660579975 - 2⁴ = 38660579959 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 (38660579977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149597 + ... + 315753.

It is an arithmetic number, because the mean of its divisors is an integer number (2055208302).

Almost surely, 2^38660579975 is an apocalyptic number.

38660579975 is a deficient number, since it is larger than the sum of its proper divisors (10664419273).

38660579975 is a wasteful number, since it uses less digits than its factorization.

38660579975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166435 (or 166430 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 65.

The spelling of 38660579975 in words is "thirty-eight billion, six hundred sixty million, five hundred seventy-nine thousand, nine hundred seventy-five".