138175480208 has 40 divisors (see below), whose sum is σ = 283634928792. Its totient is φ = 64984301568.

The previous prime is 138175480207. The next prime is 138175480213. The reversal of 138175480208 is 802084571831.

It can be written as a sum of positive squares in 4 ways, for example, as 6296105104 + 131879375104 = 79348^2 + 363152^2 .

It is a super-2 number, since 2×138175480208² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138175480207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297416 + ... + 603992.

Almost surely, 2^138175480208 is an apocalyptic number.

It is an amenable number.

138175480208 is an abundant number, since it is smaller than the sum of its proper divisors (145459448584).

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

138175480208 is a wasteful number, since it uses less digits than its factorization.

138175480208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308259 (or 308253 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 138175480208 in words is "one hundred thirty-eight billion, one hundred seventy-five million, four hundred eighty thousand, two hundred eight".