138474598157 has 4 divisors (see below), whose sum is σ = 158256683616. Its totient is φ = 118692512700.

The previous prime is 138474598139. The next prime is 138474598181. The reversal of 138474598157 is 751895474831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138474598157 - 2⁸ = 138474597901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138474598157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138474598127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9891042719 + ... + 9891042732.

It is an arithmetic number, because the mean of its divisors is an integer number (39564170904).

Almost surely, 2^138474598157 is an apocalyptic number.

It is an amenable number.

138474598157 is a deficient number, since it is larger than the sum of its proper divisors (19782085459).

138474598157 is an equidigital number, since it uses as much as digits as its factorization.

138474598157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782085458.

The product of its digits is 33868800, while the sum is 62.

The spelling of 138474598157 in words is "one hundred thirty-eight billion, four hundred seventy-four million, five hundred ninety-eight thousand, one hundred fifty-seven".