51726268313 has 2 divisors, whose sum is σ = 51726268314. Its totient is φ = 51726268312.

The previous prime is 51726268309. The next prime is 51726268327. The reversal of 51726268313 is 31386262715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30290965849 + 21435302464 = 174043^2 + 146408^2 .

It is a cyclic number.

It is not a de Polignac number, because 51726268313 - 2² = 51726268309 is a prime.

It is not a weakly prime, because it can be changed into another prime (51726268333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25863134156 + 25863134157.

It is an arithmetic number, because the mean of its divisors is an integer number (25863134157).

Almost surely, 2^51726268313 is an apocalyptic number.

It is an amenable number.

51726268313 is a deficient number, since it is larger than the sum of its proper divisors (1).

51726268313 is an equidigital number, since it uses as much as digits as its factorization.

51726268313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The spelling of 51726268313 in words is "fifty-one billion, seven hundred twenty-six million, two hundred sixty-eight thousand, three hundred thirteen".