138814673798 has 8 divisors (see below), whose sum is σ = 208275563640. Its totient is φ = 69389485920.

The previous prime is 138814673771. The next prime is 138814673807. The reversal of 138814673798 is 897376418831.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 8915768 + ... + 8931323.

It is an arithmetic number, because the mean of its divisors is an integer number (26034445455).

Almost surely, 2^138814673798 is an apocalyptic number.

138814673798 is a deficient number, since it is larger than the sum of its proper divisors (69460889842).

138814673798 is a wasteful number, since it uses less digits than its factorization.

138814673798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17850982.

The product of its digits is 48771072, while the sum is 65.

The spelling of 138814673798 in words is "one hundred thirty-eight billion, eight hundred fourteen million, six hundred seventy-three thousand, seven hundred ninety-eight".