138902775015 has 16 divisors (see below), whose sum is σ = 222399564768. Its totient is φ = 74029771776.

The previous prime is 138902774957. The next prime is 138902775019. The reversal of 138902775015 is 510577209831.

It is not a de Polignac number, because 138902775015 - 2⁶ = 138902774951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138902775019) 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, 3209554 + ... + 3252543.

It is an arithmetic number, because the mean of its divisors is an integer number (13899972798).

Almost surely, 2^138902775015 is an apocalyptic number.

138902775015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138902775015 is a deficient number, since it is larger than the sum of its proper divisors (83496789753).

138902775015 is a wasteful number, since it uses less digits than its factorization.

138902775015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463538.

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 138902775015 in words is "one hundred thirty-eight billion, nine hundred two million, seven hundred seventy-five thousand, fifteen".