123611342313457 has 2 divisors, whose sum is σ = 123611342313458. Its totient is φ = 123611342313456.

The previous prime is 123611342313337. The next prime is 123611342313499. The reversal of 123611342313457 is 754313243116321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75547404623601 + 48063937689856 = 8691801^2 + 6932816^2 .

It is a cyclic number.

It is not a de Polignac number, because 123611342313457 - 2¹⁵ = 123611342280689 is a prime.

It is not a weakly prime, because it can be changed into another prime (123611342314457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61805671156728 + 61805671156729.

It is an arithmetic number, because the mean of its divisors is an integer number (61805671156729).

Almost surely, 2^{123611342313457} is an apocalyptic number.

It is an amenable number.

123611342313457 is a deficient number, since it is larger than the sum of its proper divisors (1).

123611342313457 is an equidigital number, since it uses as much as digits as its factorization.

123611342313457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

Adding to 123611342313457 its reverse (754313243116321), we get a palindrome (877924585429778).

The spelling of 123611342313457 in words is "one hundred twenty-three trillion, six hundred eleven billion, three hundred forty-two million, three hundred thirteen thousand, four hundred fifty-seven".