56840435317 has 2 divisors, whose sum is σ = 56840435318. Its totient is φ = 56840435316.

The previous prime is 56840435269. The next prime is 56840435329. The reversal of 56840435317 is 71353404865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44534082961 + 12306352356 = 211031^2 + 110934^2 .

It is a cyclic number.

It is not a de Polignac number, because 56840435317 - 2⁷ = 56840435189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56843435317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28420217658 + 28420217659.

It is an arithmetic number, because the mean of its divisors is an integer number (28420217659).

Almost surely, 2^56840435317 is an apocalyptic number.

It is an amenable number.

56840435317 is a deficient number, since it is larger than the sum of its proper divisors (1).

56840435317 is an equidigital number, since it uses as much as digits as its factorization.

56840435317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 56840435317 in words is "fifty-six billion, eight hundred forty million, four hundred thirty-five thousand, three hundred seventeen".