809430930761 has 2 divisors, whose sum is σ = 809430930762. Its totient is φ = 809430930760.

The previous prime is 809430930709. The next prime is 809430930779. The reversal of 809430930761 is 167039034908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486846689536 + 322584241225 = 697744^2 + 567965^2 .

It is a cyclic number.

It is not a de Polignac number, because 809430930761 - 2¹⁴ = 809430914377 is a prime.

It is not a weakly prime, because it can be changed into another prime (809430930361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404715465380 + 404715465381.

It is an arithmetic number, because the mean of its divisors is an integer number (404715465381).

Almost surely, 2^809430930761 is an apocalyptic number.

It is an amenable number.

809430930761 is a deficient number, since it is larger than the sum of its proper divisors (1).

809430930761 is an equidigital number, since it uses as much as digits as its factorization.

809430930761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 809430930761 in words is "eight hundred nine billion, four hundred thirty million, nine hundred thirty thousand, seven hundred sixty-one".