138543681750 has 64 divisors (see below), whose sum is σ = 348329412288. Its totient is φ = 36675283200.

The previous prime is 138543681739. The next prime is 138543681769. The reversal of 138543681750 is 57186345831.

It is a junction number, because it is equal to n+sod(n) for n = 138543681693 and 138543681702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571429 + ... + 776928.

It is an arithmetic number, because the mean of its divisors is an integer number (5442647067).

Almost surely, 2^138543681750 is an apocalyptic number.

138543681750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138543681750 is an abundant number, since it is smaller than the sum of its proper divisors (209785730538).

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

138543681750 is a wasteful number, since it uses less digits than its factorization.

138543681750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348514 (or 1348504 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 138543681750 in words is "one hundred thirty-eight billion, five hundred forty-three million, six hundred eighty-one thousand, seven hundred fifty".