7138123772357 has 2 divisors, whose sum is σ = 7138123772358. Its totient is φ = 7138123772356.

The previous prime is 7138123772309. The next prime is 7138123772369. The reversal of 7138123772357 is 7532773218317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6946882861636 + 191240910721 = 2635694^2 + 437311^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138123772357 - 2⁴² = 2740077261253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138123772057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569061886178 + 3569061886179.

It is an arithmetic number, because the mean of its divisors is an integer number (3569061886179).

Almost surely, 2^{7138123772357} is an apocalyptic number.

It is an amenable number.

7138123772357 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138123772357 is an equidigital number, since it uses as much as digits as its factorization.

7138123772357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 56.

The spelling of 7138123772357 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, seven hundred seventy-two thousand, three hundred fifty-seven".