812884222692 has 36 divisors (see below), whose sum is σ = 2093560314300. Its totient is φ = 265848927552.

The previous prime is 812884222691. The next prime is 812884222697. The reversal of 812884222692 is 296222488218.

812884222692 is a `hidden beast` number, since 8 + 128 + 8 + 422 + 2 + 6 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 334761759396 + 478122463296 = 578586^2 + 691464^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (812884222691) 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, 213018067 + ... + 213021882.

It is an arithmetic number, because the mean of its divisors is an integer number (58154453175).

Almost surely, 2^812884222692 is an apocalyptic number.

It is an amenable number.

812884222692 is an abundant number, since it is smaller than the sum of its proper divisors (1280676091608).

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

812884222692 is a wasteful number, since it uses less digits than its factorization.

812884222692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426040012 (or 426040007 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 54.

The spelling of 812884222692 in words is "eight hundred twelve billion, eight hundred eighty-four million, two hundred twenty-two thousand, six hundred ninety-two".