808191194132772 has 18 divisors (see below), whose sum is σ = 2042927740724598. Its totient is φ = 269397064710912.

The previous prime is 808191194132761. The next prime is 808191194132891. The reversal of 808191194132772 is 277231491191808.

808191194132772 is a `hidden beast` number, since 8 + 0 + 8 + 19 + 119 + 413 + 27 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 635739038665956 + 172452155466816 = 25213866^2 + 13132104^2 .

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

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, 11224877696253 + ... + 11224877696324.

It is an arithmetic number, because the mean of its divisors is an integer number (113495985595811).

Almost surely, 2^{808191194132772} is an apocalyptic number.

It is an amenable number.

808191194132772 is an abundant number, since it is smaller than the sum of its proper divisors (1234736546591826).

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

808191194132772 is a wasteful number, since it uses less digits than its factorization.

808191194132772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22449755392587 (or 22449755392582 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 808191194132772 in words is "eight hundred eight trillion, one hundred ninety-one billion, one hundred ninety-four million, one hundred thirty-two thousand, seven hundred seventy-two".