123115557105053 has 2 divisors, whose sum is σ = 123115557105054. Its totient is φ = 123115557105052.

The previous prime is 123115557104993. The next prime is 123115557105059. The reversal of 123115557105053 is 350501755511321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94559326602244 + 28556230502809 = 9724162^2 + 5343803^2 .

It is a cyclic number.

It is not a de Polignac number, because 123115557105053 - 2²⁴ = 123115540327837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123115557104995 and 123115557105013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123115557105059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61557778552526 + 61557778552527.

It is an arithmetic number, because the mean of its divisors is an integer number (61557778552527).

Almost surely, 2^{123115557105053} is an apocalyptic number.

It is an amenable number.

123115557105053 is a deficient number, since it is larger than the sum of its proper divisors (1).

123115557105053 is an equidigital number, since it uses as much as digits as its factorization.

123115557105053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393750, while the sum is 44.

The spelling of 123115557105053 in words is "one hundred twenty-three trillion, one hundred fifteen billion, five hundred fifty-seven million, one hundred five thousand, fifty-three".