138886203015 has 64 divisors (see below), whose sum is σ = 285352243200. Its totient is φ = 62777417472.

The previous prime is 138886202989. The next prime is 138886203017. The reversal of 138886203015 is 510302688831.

138886203015 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 8 + 620 + 3 + 0 + 15 = 666.

It is not a de Polignac number, because 138886203015 - 2¹⁶ = 138886137479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138886203017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 741567 + ... + 909776.

It is an arithmetic number, because the mean of its divisors is an integer number (4458628800).

Almost surely, 2^138886203015 is an apocalyptic number.

138886203015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138886203015 is an abundant number, since it is smaller than the sum of its proper divisors (146466040185).

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

138886203015 is a wasteful number, since it uses less digits than its factorization.

138886203015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651453 (or 1651447 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 138886203015 in words is "one hundred thirty-eight billion, eight hundred eighty-six million, two hundred three thousand, fifteen".