138395138750 has 40 divisors (see below), whose sum is σ = 282990407832. Its totient is φ = 50325500000.

The previous prime is 138395138741. The next prime is 138395138801. The reversal of 138395138750 is 57831593831.

It is a junction number, because it is equal to n+sod(n) for n = 138395138692 and 138395138701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5018801 + ... + 5046300.

Almost surely, 2^138395138750 is an apocalyptic number.

138395138750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138395138750 is an abundant number, since it is smaller than the sum of its proper divisors (144595269082).

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

138395138750 is a wasteful number, since it uses less digits than its factorization.

138395138750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065134 (or 10065119 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 138395138750 in words is "one hundred thirty-eight billion, three hundred ninety-five million, one hundred thirty-eight thousand, seven hundred fifty".