138997338111 has 12 divisors (see below), whose sum is σ = 207697172280. Its totient is φ = 89469550800.

The previous prime is 138997338091. The next prime is 138997338143. The reversal of 138997338111 is 111833799831.

It is not a de Polignac number, because 138997338111 - 2⁹ = 138997337599 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138997330111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266278165 + ... + 266278686.

It is an arithmetic number, because the mean of its divisors is an integer number (17308097690).

Almost surely, 2^138997338111 is an apocalyptic number.

138997338111 is a deficient number, since it is larger than the sum of its proper divisors (68699834169).

138997338111 is a wasteful number, since it uses less digits than its factorization.

138997338111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532556886 (or 532556883 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The spelling of 138997338111 in words is "one hundred thirty-eight billion, nine hundred ninety-seven million, three hundred thirty-eight thousand, one hundred eleven".