38688979129 has 16 divisors (see below), whose sum is σ = 39535309440. Its totient is φ = 37852053120.

The previous prime is 38688979123. The next prime is 38688979169. The reversal of 38688979129 is 92197988683.

It is a cyclic number.

It is not a de Polignac number, because 38688979129 - 2¹¹ = 38688977081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38688979123) 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, 5717302 + ... + 5724064.

It is an arithmetic number, because the mean of its divisors is an integer number (2470956840).

Almost surely, 2^38688979129 is an apocalyptic number.

It is an amenable number.

38688979129 is a deficient number, since it is larger than the sum of its proper divisors (846330311).

38688979129 is a wasteful number, since it uses less digits than its factorization.

38688979129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440.

The product of its digits is 94058496, while the sum is 70.

The spelling of 38688979129 in words is "thirty-eight billion, six hundred eighty-eight million, nine hundred seventy-nine thousand, one hundred twenty-nine".