51799645493 has 2 divisors, whose sum is σ = 51799645494. Its totient is φ = 51799645492.

The previous prime is 51799645421. The next prime is 51799645529. The reversal of 51799645493 is 39454699715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41573986609 + 10225658884 = 203897^2 + 101122^2 .

It is a cyclic number.

It is not a de Polignac number, because 51799645493 - 2¹⁴ = 51799629109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51799645193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25899822746 + 25899822747.

It is an arithmetic number, because the mean of its divisors is an integer number (25899822747).

Almost surely, 2^51799645493 is an apocalyptic number.

It is an amenable number.

51799645493 is a deficient number, since it is larger than the sum of its proper divisors (1).

51799645493 is an equidigital number, since it uses as much as digits as its factorization.

51799645493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36741600, while the sum is 62.

The spelling of 51799645493 in words is "fifty-one billion, seven hundred ninety-nine million, six hundred forty-five thousand, four hundred ninety-three".