7138123815427 has 16 divisors (see below), whose sum is σ = 7828190853120. Its totient is φ = 6454917834400.

The previous prime is 7138123815421. The next prime is 7138123815439. The reversal of 7138123815427 is 7245183218317.

It is a cyclic number.

It is not a de Polignac number, because 7138123815427 - 2³⁹ = 6588368001539 is a prime.

It is a super-2 number, since 2×7138123815427² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7138123815421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51234753 + ... + 51373885.

It is an arithmetic number, because the mean of its divisors is an integer number (489261928320).

Almost surely, 2^{7138123815427} is an apocalyptic number.

7138123815427 is a deficient number, since it is larger than the sum of its proper divisors (690067037693).

7138123815427 is a wasteful number, since it uses less digits than its factorization.

7138123815427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163754.

The product of its digits is 2257920, while the sum is 52.

The spelling of 7138123815427 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, eight hundred fifteen thousand, four hundred twenty-seven".