51911659584833 has 2 divisors, whose sum is σ = 51911659584834. Its totient is φ = 51911659584832.

The previous prime is 51911659584751. The next prime is 51911659584853. The reversal of 51911659584833 is 33848595611915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37422925335184 + 14488734249649 = 6117428^2 + 3806407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51911659584833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51911659584853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25955829792416 + 25955829792417.

It is an arithmetic number, because the mean of its divisors is an integer number (25955829792417).

Almost surely, 2^{51911659584833} is an apocalyptic number.

It is an amenable number.

51911659584833 is a deficient number, since it is larger than the sum of its proper divisors (1).

51911659584833 is an equidigital number, since it uses as much as digits as its factorization.

51911659584833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968000, while the sum is 68.

The spelling of 51911659584833 in words is "fifty-one trillion, nine hundred eleven billion, six hundred fifty-nine million, five hundred eighty-four thousand, eight hundred thirty-three".