138697259073 has 4 divisors (see below), whose sum is σ = 184929678768. Its totient is φ = 92464839380.

The previous prime is 138697259039. The next prime is 138697259087. The reversal of 138697259073 is 370952796831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138697259073 - 2⁶ = 138697259009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138697258998 and 138697259016.

It is not an unprimeable number, because it can be changed into a prime (138693259073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23116209843 + ... + 23116209848.

It is an arithmetic number, because the mean of its divisors is an integer number (46232419692).

Almost surely, 2^138697259073 is an apocalyptic number.

It is an amenable number.

138697259073 is a deficient number, since it is larger than the sum of its proper divisors (46232419695).

138697259073 is an equidigital number, since it uses as much as digits as its factorization.

138697259073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46232419694.

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 138697259073 in words is "one hundred thirty-eight billion, six hundred ninety-seven million, two hundred fifty-nine thousand, seventy-three".