138392277844 has 48 divisors (see below), whose sum is σ = 249704477568. Its totient is φ = 67090318848.

The previous prime is 138392277833. The next prime is 138392277847. The reversal of 138392277844 is 448772293831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138392277847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4103619 + ... + 4137205.

It is an arithmetic number, because the mean of its divisors is an integer number (5202176616).

Almost surely, 2^138392277844 is an apocalyptic number.

It is an amenable number.

138392277844 is a deficient number, since it is larger than the sum of its proper divisors (111312199724).

138392277844 is a wasteful number, since it uses less digits than its factorization.

138392277844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33904 (or 33902 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The spelling of 138392277844 in words is "one hundred thirty-eight billion, three hundred ninety-two million, two hundred seventy-seven thousand, eight hundred forty-four".