138749159753 has 4 divisors (see below), whose sum is σ = 138794080020. Its totient is φ = 138704239488.

The previous prime is 138749159719. The next prime is 138749159761. The reversal of 138749159753 is 357951947831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121663532809 + 17085626944 = 348803^2 + 130712^2 .

It is a cyclic number.

It is not a de Polignac number, because 138749159753 - 2¹⁰ = 138749158729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138749159713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22455500 + ... + 22461677.

It is an arithmetic number, because the mean of its divisors is an integer number (34698520005).

Almost surely, 2^138749159753 is an apocalyptic number.

It is an amenable number.

138749159753 is a deficient number, since it is larger than the sum of its proper divisors (44920267).

138749159753 is an equidigital number, since it uses as much as digits as its factorization.

138749159753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44920266.

The product of its digits is 28576800, while the sum is 62.

The spelling of 138749159753 in words is "one hundred thirty-eight billion, seven hundred forty-nine million, one hundred fifty-nine thousand, seven hundred fifty-three".