7138578875231 has 2 divisors, whose sum is σ = 7138578875232. Its totient is φ = 7138578875230.

The previous prime is 7138578875173. The next prime is 7138578875237. The reversal of 7138578875231 is 1325788758317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7138578875231 - 2²⁶ = 7138511766367 is a prime.

It is a super-2 number, since 2×7138578875231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138578875237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569289437615 + 3569289437616.

It is an arithmetic number, because the mean of its divisors is an integer number (3569289437616).

Almost surely, 2^{7138578875231} is an apocalyptic number.

7138578875231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138578875231 is an equidigital number, since it uses as much as digits as its factorization.

7138578875231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79027200, while the sum is 65.

The spelling of 7138578875231 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred seventy-five thousand, two hundred thirty-one".