138276709712 has 20 divisors (see below), whose sum is σ = 267917057940. Its totient is φ = 69136823808.

The previous prime is 138276709699. The next prime is 138276709723. The reversal of 138276709712 is 217907672831.

It can be written as a sum of positive squares in 2 ways, for example, as 12013036816 + 126263672896 = 109604^2 + 355336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108958 + ... + 1227330.

It is an arithmetic number, because the mean of its divisors is an integer number (13395852897).

Almost surely, 2^138276709712 is an apocalyptic number.

It is an amenable number.

138276709712 is a deficient number, since it is larger than the sum of its proper divisors (129640348228).

138276709712 is a wasteful number, since it uses less digits than its factorization.

138276709712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191390 (or 191384 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 138276709712 in words is "one hundred thirty-eight billion, two hundred seventy-six million, seven hundred nine thousand, seven hundred twelve".