52791317687 has 2 divisors, whose sum is σ = 52791317688. Its totient is φ = 52791317686.

The previous prime is 52791317629. The next prime is 52791317699. The reversal of 52791317687 is 78671319725.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52791317687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52791317587) 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, 26395658843 + 26395658844.

It is an arithmetic number, because the mean of its divisors is an integer number (26395658844).

Almost surely, 2^52791317687 is an apocalyptic number.

52791317687 is a deficient number, since it is larger than the sum of its proper divisors (1).

52791317687 is an equidigital number, since it uses as much as digits as its factorization.

52791317687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 56.

The spelling of 52791317687 in words is "fifty-two billion, seven hundred ninety-one million, three hundred seventeen thousand, six hundred eighty-seven".