138113032785 has 64 divisors (see below), whose sum is σ = 278301585408. Its totient is φ = 56925275904.

The previous prime is 138113032777. The next prime is 138113032807. The reversal of 138113032785 is 587230311831.

It is a happy number.

It is not a de Polignac number, because 138113032785 - 2³ = 138113032777 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1117837 + ... + 1235226.

It is an arithmetic number, because the mean of its divisors is an integer number (4348462272).

Almost surely, 2^138113032785 is an apocalyptic number.

138113032785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138113032785 is an abundant number, since it is smaller than the sum of its proper divisors (140188552623).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138113032785 is a wasteful number, since it uses less digits than its factorization.

138113032785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353134.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 138113032785 in words is "one hundred thirty-eight billion, one hundred thirteen million, thirty-two thousand, seven hundred eighty-five".