138751115187 has 16 divisors (see below), whose sum is σ = 194793872000. Its totient is φ = 87607324224.

The previous prime is 138751115179. The next prime is 138751115197. The reversal of 138751115187 is 781511157831.

It is not a de Polignac number, because 138751115187 - 2³ = 138751115179 is a prime.

It is a super-2 number, since 2×138751115187² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138751115147) 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, 143737 + ... + 546042.

It is an arithmetic number, because the mean of its divisors is an integer number (12174617000).

Almost surely, 2^138751115187 is an apocalyptic number.

138751115187 is a deficient number, since it is larger than the sum of its proper divisors (56042756813).

138751115187 is a wasteful number, since it uses less digits than its factorization.

138751115187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693330.

The product of its digits is 235200, while the sum is 48.

The spelling of 138751115187 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, one hundred fifteen thousand, one hundred eighty-seven".