253608717873613 has 2 divisors, whose sum is σ = 253608717873614. Its totient is φ = 253608717873612.

The previous prime is 253608717873391. The next prime is 253608717873629. The reversal of 253608717873613 is 316378717806352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163580083964649 + 90028633908964 = 12789843^2 + 9488342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253608717873613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253608717873013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126804358936806 + 126804358936807.

It is an arithmetic number, because the mean of its divisors is an integer number (126804358936807).

Almost surely, 2^{253608717873613} is an apocalyptic number.

It is an amenable number.

253608717873613 is a deficient number, since it is larger than the sum of its proper divisors (1).

253608717873613 is an equidigital number, since it uses as much as digits as its factorization.

253608717873613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 253608717873613 in words is "two hundred fifty-three trillion, six hundred eight billion, seven hundred seventeen million, eight hundred seventy-three thousand, six hundred thirteen".