138396444583 has 4 divisors (see below), whose sum is σ = 144413681328. Its totient is φ = 132379207840.

The previous prime is 138396444577. The next prime is 138396444623. The reversal of 138396444583 is 385444693831.

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

It is a cyclic number.

It is not a de Polignac number, because 138396444583 - 2¹³ = 138396436391 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 (138396744583) 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, 3008618338 + ... + 3008618383.

It is an arithmetic number, because the mean of its divisors is an integer number (36103420332).

Almost surely, 2^138396444583 is an apocalyptic number.

138396444583 is a deficient number, since it is larger than the sum of its proper divisors (6017236745).

138396444583 is an equidigital number, since it uses as much as digits as its factorization.

138396444583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017236744.

The product of its digits is 29859840, while the sum is 58.

The spelling of 138396444583 in words is "one hundred thirty-eight billion, three hundred ninety-six million, four hundred forty-four thousand, five hundred eighty-three".