138485513973 has 8 divisors (see below), whose sum is σ = 189637821088. Its totient is φ = 89828441424.

The previous prime is 138485513941. The next prime is 138485513993. The reversal of 138485513973 is 379315584831.

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

It is not a de Polignac number, because 138485513973 - 2⁵ = 138485513941 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 (138485513993) 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, 623808511 + ... + 623808732.

It is an arithmetic number, because the mean of its divisors is an integer number (23704727636).

Almost surely, 2^138485513973 is an apocalyptic number.

It is an amenable number.

138485513973 is a deficient number, since it is larger than the sum of its proper divisors (51152307115).

138485513973 is a wasteful number, since it uses less digits than its factorization.

138485513973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247617283.

The product of its digits is 10886400, while the sum is 57.

The spelling of 138485513973 in words is "one hundred thirty-eight billion, four hundred eighty-five million, five hundred thirteen thousand, nine hundred seventy-three".