123320252431553 has 2 divisors, whose sum is σ = 123320252431554. Its totient is φ = 123320252431552.

The previous prime is 123320252431549. The next prime is 123320252431591. The reversal of 123320252431553 is 355134252023321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122661317616049 + 658934815504 = 11075257^2 + 811748^2 .

It is a cyclic number.

It is not a de Polignac number, because 123320252431553 - 2² = 123320252431549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123320252431553.

It is not a weakly prime, because it can be changed into another prime (123320252436553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660126215776 + 61660126215777.

It is an arithmetic number, because the mean of its divisors is an integer number (61660126215777).

Almost surely, 2^{123320252431553} is an apocalyptic number.

It is an amenable number.

123320252431553 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320252431553 is an equidigital number, since it uses as much as digits as its factorization.

123320252431553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 123320252431553 in words is "one hundred twenty-three trillion, three hundred twenty billion, two hundred fifty-two million, four hundred thirty-one thousand, five hundred fifty-three".