805940115361 has 2 divisors, whose sum is σ = 805940115362. Its totient is φ = 805940115360.

The previous prime is 805940115359. The next prime is 805940115373. The reversal of 805940115361 is 163511049508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651152163600 + 154787951761 = 806940^2 + 393431^2 .

It is a cyclic number.

It is not a de Polignac number, because 805940115361 - 2¹ = 805940115359 is a prime.

Together with 805940115359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (805940110361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402970057680 + 402970057681.

It is an arithmetic number, because the mean of its divisors is an integer number (402970057681).

Almost surely, 2^805940115361 is an apocalyptic number.

It is an amenable number.

805940115361 is a deficient number, since it is larger than the sum of its proper divisors (1).

805940115361 is an equidigital number, since it uses as much as digits as its factorization.

805940115361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 805940115361 in words is "eight hundred five billion, nine hundred forty million, one hundred fifteen thousand, three hundred sixty-one".