51425593517 has 2 divisors, whose sum is σ = 51425593518. Its totient is φ = 51425593516.

The previous prime is 51425593489. The next prime is 51425593519. The reversal of 51425593517 is 71539552415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45383485156 + 6042108361 = 213034^2 + 77731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51425593517 is a prime.

Together with 51425593519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51425593519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712796758 + 25712796759.

It is an arithmetic number, because the mean of its divisors is an integer number (25712796759).

Almost surely, 2^51425593517 is an apocalyptic number.

It is an amenable number.

51425593517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51425593517 is an equidigital number, since it uses as much as digits as its factorization.

51425593517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945000, while the sum is 47.

The spelling of 51425593517 in words is "fifty-one billion, four hundred twenty-five million, five hundred ninety-three thousand, five hundred seventeen".