138861323113524 has 24 divisors (see below), whose sum is σ = 353465186107488. Its totient is φ = 42079188822240.

The previous prime is 138861323113421. The next prime is 138861323113537. The reversal of 138861323113524 is 425311323168831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525989860147 + ... + 525989860410.

It is an arithmetic number, because the mean of its divisors is an integer number (14727716087812).

Almost surely, 2^{138861323113524} is an apocalyptic number.

It is an amenable number.

138861323113524 is an abundant number, since it is smaller than the sum of its proper divisors (214603862993964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138861323113524 is a wasteful number, since it uses less digits than its factorization.

138861323113524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051979720575 (or 1051979720573 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The spelling of 138861323113524 in words is "one hundred thirty-eight trillion, eight hundred sixty-one billion, three hundred twenty-three million, one hundred thirteen thousand, five hundred twenty-four".