809605220467 has 2 divisors, whose sum is σ = 809605220468. Its totient is φ = 809605220466.

The previous prime is 809605220447. The next prime is 809605220491. The reversal of 809605220467 is 764022506908.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-809605220467 is a prime.

It is a super-2 number, since 2×809605220467² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 809605220467.

It is not a weakly prime, because it can be changed into another prime (809605220447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404802610233 + 404802610234.

It is an arithmetic number, because the mean of its divisors is an integer number (404802610234).

Almost surely, 2^809605220467 is an apocalyptic number.

809605220467 is a deficient number, since it is larger than the sum of its proper divisors (1).

809605220467 is an equidigital number, since it uses as much as digits as its factorization.

809605220467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 809605220467 in words is "eight hundred nine billion, six hundred five million, two hundred twenty thousand, four hundred sixty-seven".