138731459998 has 4 divisors (see below), whose sum is σ = 208097190000. Its totient is φ = 69365729998.

The previous prime is 138731459983. The next prime is 138731460019. The reversal of 138731459998 is 899954137831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34682864998 + ... + 34682865001.

It is an arithmetic number, because the mean of its divisors is an integer number (52024297500).

Almost surely, 2^138731459998 is an apocalyptic number.

138731459998 is a deficient number, since it is larger than the sum of its proper divisors (69365730002).

138731459998 is an equidigital number, since it uses as much as digits as its factorization.

138731459998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69365730001.

The product of its digits is 58786560, while the sum is 67.

The spelling of 138731459998 in words is "one hundred thirty-eight billion, seven hundred thirty-one million, four hundred fifty-nine thousand, nine hundred ninety-eight".