7138123815408 has 40 divisors (see below), whose sum is σ = 18715379365248. Its totient is φ = 2343861550272.

The previous prime is 7138123815353. The next prime is 7138123815421. The reversal of 7138123815408 is 8045183218317.

It is a congruent number.

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, 1109779716 + ... + 1109786147.

Almost surely, 2^{7138123815408} is an apocalyptic number.

It is an amenable number.

7138123815408 is an abundant number, since it is smaller than the sum of its proper divisors (11577255549840).

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

7138123815408 is a wasteful number, since it uses less digits than its factorization.

7138123815408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219565941 (or 2219565935 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 7138123815408 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, eight hundred fifteen thousand, four hundred eight".