808217455212 has 18 divisors (see below), whose sum is σ = 2042994122988. Its totient is φ = 269405818392.

The previous prime is 808217455193. The next prime is 808217455229. The reversal of 808217455212 is 212554712808.

808217455212 is a `hidden beast` number, since 8 + 0 + 8 + 21 + 74 + 552 + 1 + 2 = 666.

808217455212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×808217455212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11225242398 + ... + 11225242469.

Almost surely, 2^808217455212 is an apocalyptic number.

It is an amenable number.

808217455212 is an abundant number, since it is smaller than the sum of its proper divisors (1234776667776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808217455212 is a wasteful number, since it uses less digits than its factorization.

808217455212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22450484877 (or 22450484872 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 808217455212 in words is "eight hundred eight billion, two hundred seventeen million, four hundred fifty-five thousand, two hundred twelve".