138438722112782 has 48 divisors (see below), whose sum is σ = 260277817190832. Its totient is φ = 54738604045440.

The previous prime is 138438722112763. The next prime is 138438722112841. The reversal of 138438722112782 is 287211227834831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25676783 + ... + 30596970.

It is an arithmetic number, because the mean of its divisors is an integer number (5422454524809).

Almost surely, 2^{138438722112782} is an apocalyptic number.

138438722112782 is a deficient number, since it is larger than the sum of its proper divisors (121839095078050).

138438722112782 is a wasteful number, since it uses less digits than its factorization.

138438722112782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56275713 (or 56275706 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 59.

The spelling of 138438722112782 in words is "one hundred thirty-eight trillion, four hundred thirty-eight billion, seven hundred twenty-two million, one hundred twelve thousand, seven hundred eighty-two".