138311687503 has 8 divisors (see below), whose sum is σ = 150908665680. Its totient is φ = 125718574080.

The previous prime is 138311687483. The next prime is 138311687537. The reversal of 138311687503 is 305786113831.

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

It is not a de Polignac number, because 138311687503 - 2⁵ = 138311687471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138311681503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891100 + ... + 1034737.

It is an arithmetic number, because the mean of its divisors is an integer number (18863583210).

Almost surely, 2^138311687503 is an apocalyptic number.

138311687503 is a deficient number, since it is larger than the sum of its proper divisors (12596978177).

138311687503 is a wasteful number, since it uses less digits than its factorization.

138311687503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932377.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 138311687503 in words is "one hundred thirty-eight billion, three hundred eleven million, six hundred eighty-seven thousand, five hundred three".