51705092213 has 2 divisors, whose sum is σ = 51705092214. Its totient is φ = 51705092212.

The previous prime is 51705092149. The next prime is 51705092249. The reversal of 51705092213 is 31229050715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40942689649 + 10762402564 = 202343^2 + 103742^2 .

It is a cyclic number.

It is not a de Polignac number, because 51705092213 - 2⁶ = 51705092149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51705002213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852546106 + 25852546107.

It is an arithmetic number, because the mean of its divisors is an integer number (25852546107).

Almost surely, 2^51705092213 is an apocalyptic number.

It is an amenable number.

51705092213 is a deficient number, since it is larger than the sum of its proper divisors (1).

51705092213 is an equidigital number, since it uses as much as digits as its factorization.

51705092213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 51705092213 in words is "fifty-one billion, seven hundred five million, ninety-two thousand, two hundred thirteen".