52117286993 has 2 divisors, whose sum is σ = 52117286994. Its totient is φ = 52117286992.

The previous prime is 52117286953. The next prime is 52117287031. The reversal of 52117286993 is 39968271125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52117237264 + 49729 = 228292^2 + 223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52117286993 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 (52117286953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26058643496 + 26058643497.

It is an arithmetic number, because the mean of its divisors is an integer number (26058643497).

Almost surely, 2^52117286993 is an apocalyptic number.

It is an amenable number.

52117286993 is a deficient number, since it is larger than the sum of its proper divisors (1).

52117286993 is an equidigital number, since it uses as much as digits as its factorization.

52117286993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The spelling of 52117286993 in words is "fifty-two billion, one hundred seventeen million, two hundred eighty-six thousand, nine hundred ninety-three".