808863904447 has 2 divisors, whose sum is σ = 808863904448. Its totient is φ = 808863904446.

The previous prime is 808863904393. The next prime is 808863904469. The reversal of 808863904447 is 744409368808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 808863904447 - 2³¹ = 806716420799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808863904487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404431952223 + 404431952224.

It is an arithmetic number, because the mean of its divisors is an integer number (404431952224).

Almost surely, 2^808863904447 is an apocalyptic number.

808863904447 is a deficient number, since it is larger than the sum of its proper divisors (1).

808863904447 is an equidigital number, since it uses as much as digits as its factorization.

808863904447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 808863904447 in words is "eight hundred eight billion, eight hundred sixty-three million, nine hundred four thousand, four hundred forty-seven".