7138121543408 has 20 divisors (see below), whose sum is σ = 14019564061008. Its totient is φ = 3520169527680.

The previous prime is 7138121543389. The next prime is 7138121543417. The reversal of 7138121543408 is 8043451218317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055701548 + ... + 3055703883.

Almost surely, 2^{7138121543408} is an apocalyptic number.

It is an amenable number.

7138121543408 is a deficient number, since it is larger than the sum of its proper divisors (6881442517600).

7138121543408 is a wasteful number, since it uses less digits than its factorization.

7138121543408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111405512 (or 6111405506 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 7138121543408 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-one million, five hundred forty-three thousand, four hundred eight".