138598441250 has 40 divisors (see below), whose sum is σ = 260057114460. Its totient is φ = 55382144000.

The previous prime is 138598441249. The next prime is 138598441277. The reversal of 138598441250 is 52144895831.

It can be written as a sum of positive squares in 10 ways, for example, as 11499774169 + 127098667081 = 107237^2 + 356509^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 1164506 + ... + 1277994.

Almost surely, 2^138598441250 is an apocalyptic number.

138598441250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138598441250 is a deficient number, since it is larger than the sum of its proper divisors (121458673210).

138598441250 is an equidigital number, since it uses as much as digits as its factorization.

138598441250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114488 (or 114473 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 138598441250 in words is "one hundred thirty-eight billion, five hundred ninety-eight million, four hundred forty-one thousand, two hundred fifty".