51668573683373 has 2 divisors, whose sum is σ = 51668573683374. Its totient is φ = 51668573683372.

The previous prime is 51668573683339. The next prime is 51668573683403. The reversal of 51668573683373 is 37338637586615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26706539258569 + 24962034424804 = 5167837^2 + 4996202^2 .

It is a cyclic number.

It is not a de Polignac number, because 51668573683373 - 2²⁰ = 51668572634797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51668573683297 and 51668573683306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51668573683333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25834286841686 + 25834286841687.

It is an arithmetic number, because the mean of its divisors is an integer number (25834286841687).

Almost surely, 2^{51668573683373} is an apocalyptic number.

It is an amenable number.

51668573683373 is a deficient number, since it is larger than the sum of its proper divisors (1).

51668573683373 is an equidigital number, since it uses as much as digits as its factorization.

51668573683373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1371686400, while the sum is 71.

The spelling of 51668573683373 in words is "fifty-one trillion, six hundred sixty-eight billion, five hundred seventy-three million, six hundred eighty-three thousand, three hundred seventy-three".