138372851099 has 16 divisors (see below), whose sum is σ = 161662832640. Its totient is φ = 115984530240.

The previous prime is 138372851093. The next prime is 138372851131. The reversal of 138372851099 is 990158273831.

It is a cyclic number.

It is not a de Polignac number, because 138372851099 - 2²⁴ = 138356073883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138372851093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 798194 + ... + 955959.

It is an arithmetic number, because the mean of its divisors is an integer number (10103927040).

Almost surely, 2^138372851099 is an apocalyptic number.

138372851099 is a deficient number, since it is larger than the sum of its proper divisors (23289981541).

138372851099 is a wasteful number, since it uses less digits than its factorization.

138372851099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754410.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 138372851099 in words is "one hundred thirty-eight billion, three hundred seventy-two million, eight hundred fifty-one thousand, ninety-nine".