138193316635 has 16 divisors (see below), whose sum is σ = 180929813472. Its totient is φ = 100491897600.

The previous prime is 138193316609. The next prime is 138193316663. The reversal of 138193316635 is 536613391831.

138193316635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138193316635 - 2⁷ = 138193316507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 310765 + ... + 610705.

It is an arithmetic number, because the mean of its divisors is an integer number (11308113342).

Almost surely, 2^138193316635 is an apocalyptic number.

138193316635 is a deficient number, since it is larger than the sum of its proper divisors (42736496837).

138193316635 is a wasteful number, since it uses less digits than its factorization.

138193316635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308334.

The product of its digits is 1049760, while the sum is 49.

The spelling of 138193316635 in words is "one hundred thirty-eight billion, one hundred ninety-three million, three hundred sixteen thousand, six hundred thirty-five".