51539607599 has 2 divisors, whose sum is σ = 51539607600. Its totient is φ = 51539607598.

The previous prime is 51539607551. The next prime is 51539607601. The reversal of 51539607599 is 99570693515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51539607599 - 2²⁸ = 51271172143 is a prime.

Together with 51539607601, 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 (51539600599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25769803799 + 25769803800.

It is an arithmetic number, because the mean of its divisors is an integer number (25769803800).

Almost surely, 2^51539607599 is an apocalyptic number.

51539607599 is a deficient number, since it is larger than the sum of its proper divisors (1).

51539607599 is an equidigital number, since it uses as much as digits as its factorization.

51539607599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11481750, while the sum is 59.

The spelling of 51539607599 in words is "fifty-one billion, five hundred thirty-nine million, six hundred seven thousand, five hundred ninety-nine".