138247167408 has 40 divisors (see below), whose sum is σ = 408158304768. Its totient is φ = 39499190592.

The previous prime is 138247167403. The next prime is 138247167439. The reversal of 138247167408 is 804761742831.

It is a super-2 number, since 2×138247167408² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138247167403) 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, 205724616 + ... + 205725287.

Almost surely, 2^138247167408 is an apocalyptic number.

It is an amenable number.

138247167408 is an abundant number, since it is smaller than the sum of its proper divisors (269911137360).

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

138247167408 is a wasteful number, since it uses less digits than its factorization.

138247167408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411449921 (or 411449915 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 138247167408 in words is "one hundred thirty-eight billion, two hundred forty-seven million, one hundred sixty-seven thousand, four hundred eight".