138905050179 has 16 divisors (see below), whose sum is σ = 211673928960. Its totient is φ = 79370905440.

The previous prime is 138905050133. The next prime is 138905050183. The reversal of 138905050179 is 971050509831.

It is not a de Polignac number, because 138905050179 - 2¹⁶ = 138904984643 is a prime.

It is a super-2 number, since 2×138905050179² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138905050199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408124 + ... + 666614.

It is an arithmetic number, because the mean of its divisors is an integer number (13229620560).

Almost surely, 2^138905050179 is an apocalyptic number.

138905050179 is a deficient number, since it is larger than the sum of its proper divisors (72768878781).

138905050179 is a wasteful number, since it uses less digits than its factorization.

138905050179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284090.

The product of its (nonzero) digits is 340200, while the sum is 48.

The spelling of 138905050179 in words is "one hundred thirty-eight billion, nine hundred five million, fifty thousand, one hundred seventy-nine".