138718275202 has 8 divisors (see below), whose sum is σ = 224083367676. Its totient is φ = 64023819312.

The previous prime is 138718275181. The next prime is 138718275203. The reversal of 138718275202 is 202572817831.

It can be written as a sum of positive squares in 2 ways, for example, as 136612291321 + 2105983881 = 369611^2 + 45891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (138718275203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667659113 + ... + 2667659164.

Almost surely, 2^138718275202 is an apocalyptic number.

138718275202 is a deficient number, since it is larger than the sum of its proper divisors (85365092474).

138718275202 is a wasteful number, since it uses less digits than its factorization.

138718275202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335318292.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 138718275202 in words is "one hundred thirty-eight billion, seven hundred eighteen million, two hundred seventy-five thousand, two hundred two".