51675423697 has 2 divisors, whose sum is σ = 51675423698. Its totient is φ = 51675423696.

The previous prime is 51675423689. The next prime is 51675423703. The reversal of 51675423697 is 79632457615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37467022096 + 14208401601 = 193564^2 + 119199^2 .

It is a cyclic number.

It is not a de Polignac number, because 51675423697 - 2³ = 51675423689 is a prime.

It is not a weakly prime, because it can be changed into another prime (51675423647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25837711848 + 25837711849.

It is an arithmetic number, because the mean of its divisors is an integer number (25837711849).

Almost surely, 2^51675423697 is an apocalyptic number.

It is an amenable number.

51675423697 is a deficient number, since it is larger than the sum of its proper divisors (1).

51675423697 is an equidigital number, since it uses as much as digits as its factorization.

51675423697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9525600, while the sum is 55.

The spelling of 51675423697 in words is "fifty-one billion, six hundred seventy-five million, four hundred twenty-three thousand, six hundred ninety-seven".