808512823242 has 24 divisors (see below), whose sum is σ = 1751916855780. Its totient is φ = 269482878720.

The previous prime is 808512823241. The next prime is 808512823247. The reversal of 808512823242 is 242328215808.

808512823242 is a `hidden beast` number, since 80 + 8 + 51 + 282 + 3 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 742494145761 + 66018677481 = 861681^2 + 256941^2 .

It is not an unprimeable number, because it can be changed into a prime (808512823241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1549117 + ... + 2004192.

Almost surely, 2^808512823242 is an apocalyptic number.

808512823242 is an abundant number, since it is smaller than the sum of its proper divisors (943404032538).

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

808512823242 is a wasteful number, since it uses less digits than its factorization.

808512823242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565958 (or 3565955 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 808512823242 in words is "eight hundred eight billion, five hundred twelve million, eight hundred twenty-three thousand, two hundred forty-two".