138917871043 has 32 divisors (see below), whose sum is σ = 169648128000. Its totient is φ = 111101790240.

The previous prime is 138917871023. The next prime is 138917871047. The reversal of 138917871043 is 340178719831.

It is not a de Polignac number, because 138917871043 - 2¹³ = 138917862851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138917871047) 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 31 ways as a sum of consecutive naturals, for example, 9804198 + ... + 9818356.

It is an arithmetic number, because the mean of its divisors is an integer number (5301504000).

Almost surely, 2^138917871043 is an apocalyptic number.

138917871043 is a deficient number, since it is larger than the sum of its proper divisors (30730256957).

138917871043 is a wasteful number, since it uses less digits than its factorization.

138917871043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15295.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 138917871043 in words is "one hundred thirty-eight billion, nine hundred seventeen million, eight hundred seventy-one thousand, forty-three".