138857192465712 has 80 divisors (see below), whose sum is σ = 416078126176512. Its totient is φ = 39081342009600.

The previous prime is 138857192465707. The next prime is 138857192465723. The reversal of 138857192465712 is 217564291758831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3084048039 + ... + 3084093062.

Almost surely, 2^{138857192465712} is an apocalyptic number.

138857192465712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138857192465712 is an abundant number, since it is smaller than the sum of its proper divisors (277220933710800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138857192465712 is a wasteful number, since it uses less digits than its factorization.

138857192465712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168141186 (or 6168141180 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 69.

The spelling of 138857192465712 in words is "one hundred thirty-eight trillion, eight hundred fifty-seven billion, one hundred ninety-two million, four hundred sixty-five thousand, seven hundred twelve".