138752887764 has 24 divisors (see below), whose sum is σ = 323819784288. Its totient is φ = 46241956000.

The previous prime is 138752887751. The next prime is 138752887771. The reversal of 138752887764 is 467788257831.

It is a junction number, because it is equal to n+sod(n) for n = 138752887695 and 138752887704.

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, 1061487 + ... + 1185014.

It is an arithmetic number, because the mean of its divisors is an integer number (13492491012).

Almost surely, 2^138752887764 is an apocalyptic number.

It is an amenable number.

138752887764 is an abundant number, since it is smaller than the sum of its proper divisors (185066896524).

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

138752887764 is a wasteful number, since it uses less digits than its factorization.

138752887764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251655 (or 2251653 counting only the distinct ones).

The product of its digits is 126443520, while the sum is 66.

The spelling of 138752887764 in words is "one hundred thirty-eight billion, seven hundred fifty-two million, eight hundred eighty-seven thousand, seven hundred sixty-four".