123355554045013 has 2 divisors, whose sum is σ = 123355554045014. Its totient is φ = 123355554045012.

The previous prime is 123355554045001. The next prime is 123355554045047. The reversal of 123355554045013 is 310540455553321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106366590842724 + 16988963202289 = 10313418^2 + 4121767^2 .

It is a cyclic number.

It is not a de Polignac number, because 123355554045013 - 2⁵ = 123355554044981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123355554345013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61677777022506 + 61677777022507.

It is an arithmetic number, because the mean of its divisors is an integer number (61677777022507).

Almost surely, 2^{123355554045013} is an apocalyptic number.

It is an amenable number.

123355554045013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123355554045013 is an equidigital number, since it uses as much as digits as its factorization.

123355554045013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700000, while the sum is 46.

The spelling of 123355554045013 in words is "one hundred twenty-three trillion, three hundred fifty-five billion, five hundred fifty-four million, forty-five thousand, thirteen".