138876375250 has 16 divisors (see below), whose sum is σ = 259976574936. Its totient is φ = 55550550000.

The previous prime is 138876375241. The next prime is 138876375301. The reversal of 138876375250 is 52573678831.

It can be written as a sum of positive squares in 4 ways, for example, as 42778235241 + 96098140009 = 206829^2 + 309997^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138876375191 and 138876375200.

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, 277752501 + ... + 277753000.

Almost surely, 2^138876375250 is an apocalyptic number.

138876375250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138876375250 is a deficient number, since it is larger than the sum of its proper divisors (121100199686).

138876375250 is an equidigital number, since it uses as much as digits as its factorization.

138876375250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555505518 (or 555505508 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 138876375250 in words is "one hundred thirty-eight billion, eight hundred seventy-six million, three hundred seventy-five thousand, two hundred fifty".