805760067491 has 2 divisors, whose sum is σ = 805760067492. Its totient is φ = 805760067490.

The previous prime is 805760067487. The next prime is 805760067529. The reversal of 805760067491 is 194760067508.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805760067491 - 2² = 805760067487 is a prime.

It is not a weakly prime, because it can be changed into another prime (805760064491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402880033745 + 402880033746.

It is an arithmetic number, because the mean of its divisors is an integer number (402880033746).

Almost surely, 2^805760067491 is an apocalyptic number.

805760067491 is a deficient number, since it is larger than the sum of its proper divisors (1).

805760067491 is an equidigital number, since it uses as much as digits as its factorization.

805760067491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 805760067491 in words is "eight hundred five billion, seven hundred sixty million, sixty-seven thousand, four hundred ninety-one".