51414310021813 has 2 divisors, whose sum is σ = 51414310021814. Its totient is φ = 51414310021812.

The previous prime is 51414310021807. The next prime is 51414310021817. The reversal of 51414310021813 is 31812001341415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31797046598769 + 19617263423044 = 5638887^2 + 4429138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51414310021813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51414310021817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25707155010906 + 25707155010907.

It is an arithmetic number, because the mean of its divisors is an integer number (25707155010907).

Almost surely, 2^{51414310021813} is an apocalyptic number.

It is an amenable number.

51414310021813 is a deficient number, since it is larger than the sum of its proper divisors (1).

51414310021813 is an equidigital number, since it uses as much as digits as its factorization.

51414310021813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 51414310021813 in words is "fifty-one trillion, four hundred fourteen billion, three hundred ten million, twenty-one thousand, eight hundred thirteen".