138752991133 has 4 divisors (see below), whose sum is σ = 146055780160. Its totient is φ = 131450202108.

The previous prime is 138752991127. The next prime is 138752991137. The reversal of 138752991133 is 331199257831.

138752991133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-138752991133 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 (138752991137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651394485 + ... + 3651394522.

It is an arithmetic number, because the mean of its divisors is an integer number (36513945040).

Almost surely, 2^138752991133 is an apocalyptic number.

It is an amenable number.

138752991133 is a deficient number, since it is larger than the sum of its proper divisors (7302789027).

138752991133 is an equidigital number, since it uses as much as digits as its factorization.

138752991133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302789026.

The product of its digits is 1224720, while the sum is 52.

The spelling of 138752991133 in words is "one hundred thirty-eight billion, seven hundred fifty-two million, nine hundred ninety-one thousand, one hundred thirty-three".