7138578861613 has 8 divisors (see below), whose sum is σ = 7516987855200. Its totient is φ = 6760439299728.

The previous prime is 7138578861607. The next prime is 7138578861629. The reversal of 7138578861613 is 3161688758317.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7138578861613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138578861643) 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, 67303531 + ... + 67409512.

It is an arithmetic number, because the mean of its divisors is an integer number (939623481900).

Almost surely, 2^{7138578861613} is an apocalyptic number.

It is an amenable number.

7138578861613 is a deficient number, since it is larger than the sum of its proper divisors (378408993587).

7138578861613 is a wasteful number, since it uses less digits than its factorization.

7138578861613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134715851.

The product of its digits is 40642560, while the sum is 64.

The spelling of 7138578861613 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred sixty-one thousand, six hundred thirteen".