808505641353 has 4 divisors (see below), whose sum is σ = 1078007521808. Its totient is φ = 539003760900.

The previous prime is 808505641343. The next prime is 808505641357. The reversal of 808505641353 is 353146505808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 808505641353 - 2⁴ = 808505641337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (808505641357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134750940223 + ... + 134750940228.

It is an arithmetic number, because the mean of its divisors is an integer number (269501880452).

Almost surely, 2^808505641353 is an apocalyptic number.

It is an amenable number.

808505641353 is a deficient number, since it is larger than the sum of its proper divisors (269501880455).

808505641353 is a wasteful number, since it uses less digits than its factorization.

808505641353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269501880454.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 808505641353 in words is "eight hundred eight billion, five hundred five million, six hundred forty-one thousand, three hundred fifty-three".