138685773754 has 16 divisors (see below), whose sum is σ = 226969192800. Its totient is φ = 63030978160.

The previous prime is 138685773719. The next prime is 138685773791. The reversal of 138685773754 is 457377586831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221644 + ... + 571399.

It is an arithmetic number, because the mean of its divisors is an integer number (14185574550).

Almost surely, 2^138685773754 is an apocalyptic number.

138685773754 is a deficient number, since it is larger than the sum of its proper divisors (88283419046).

138685773754 is a wasteful number, since it uses less digits than its factorization.

138685773754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801005.

The product of its digits is 118540800, while the sum is 64.

The spelling of 138685773754 in words is "one hundred thirty-eight billion, six hundred eighty-five million, seven hundred seventy-three thousand, seven hundred fifty-four".