51233406620713 has 2 divisors, whose sum is σ = 51233406620714. Its totient is φ = 51233406620712.

The previous prime is 51233406620623. The next prime is 51233406620741. The reversal of 51233406620713 is 31702660433215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50897779895824 + 335626724889 = 7134268^2 + 579333^2 .

It is a cyclic number.

It is not a de Polignac number, because 51233406620713 - 2²⁹ = 51232869749801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51233406620713.

It is not a weakly prime, because it can be changed into another prime (51233406620413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616703310356 + 25616703310357.

It is an arithmetic number, because the mean of its divisors is an integer number (25616703310357).

Almost surely, 2^{51233406620713} is an apocalyptic number.

It is an amenable number.

51233406620713 is a deficient number, since it is larger than the sum of its proper divisors (1).

51233406620713 is an equidigital number, since it uses as much as digits as its factorization.

51233406620713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 51233406620713 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred six million, six hundred twenty thousand, seven hundred thirteen".