138630117129 has 32 divisors (see below), whose sum is σ = 216651891456. Its totient is φ = 77194490880.

The previous prime is 138630117089. The next prime is 138630117181. The reversal of 138630117129 is 921711036831.

It is not a de Polignac number, because 138630117129 - 2²³ = 138621728521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138630107129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643939 + ... + 831815.

It is an arithmetic number, because the mean of its divisors is an integer number (6770371608).

Almost surely, 2^138630117129 is an apocalyptic number.

It is an amenable number.

138630117129 is a deficient number, since it is larger than the sum of its proper divisors (78021774327).

138630117129 is a wasteful number, since it uses less digits than its factorization.

138630117129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188785.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 138630117129 in words is "one hundred thirty-eight billion, six hundred thirty million, one hundred seventeen thousand, one hundred twenty-nine".