138598248689 has 4 divisors (see below), whose sum is σ = 138730122480. Its totient is φ = 138466374900.

The previous prime is 138598248631. The next prime is 138598248697. The reversal of 138598248689 is 986842895831.

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 138598248689 - 2³² = 134303281393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138598248389) 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, 65935319 + ... + 65937420.

It is an arithmetic number, because the mean of its divisors is an integer number (34682530620).

Almost surely, 2^138598248689 is an apocalyptic number.

It is an amenable number.

138598248689 is a deficient number, since it is larger than the sum of its proper divisors (131873791).

138598248689 is a wasteful number, since it uses less digits than its factorization.

138598248689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131873790.

The product of its digits is 238878720, while the sum is 71.

The spelling of 138598248689 in words is "one hundred thirty-eight billion, five hundred ninety-eight million, two hundred forty-eight thousand, six hundred eighty-nine".