138582978739 has 16 divisors (see below), whose sum is σ = 145580032000. Its totient is φ = 131764358880.

The previous prime is 138582978731. The next prime is 138582978767. The reversal of 138582978739 is 937879285831.

It is a cyclic number.

It is not a de Polignac number, because 138582978739 - 2³ = 138582978731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138582978731) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 234637 + ... + 576385.

It is an arithmetic number, because the mean of its divisors is an integer number (9098752000).

Almost surely, 2^138582978739 is an apocalyptic number.

138582978739 is a deficient number, since it is larger than the sum of its proper divisors (6997053261).

138582978739 is a wasteful number, since it uses less digits than its factorization.

138582978739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342010.

The product of its digits is 182891520, while the sum is 70.

The spelling of 138582978739 in words is "one hundred thirty-eight billion, five hundred eighty-two million, nine hundred seventy-eight thousand, seven hundred thirty-nine".