812609073792 has 96 divisors (see below), whose sum is σ = 2338931174580. Its totient is φ = 270804369408.

The previous prime is 812609073779. The next prime is 812609073811. The reversal of 812609073792 is 297370906218.

812609073792 is a `hidden beast` number, since 8 + 1 + 260 + 9 + 0 + 7 + 379 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 579876158016 + 232732915776 = 761496^2 + 482424^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4816528 + ... + 4982384.

Almost surely, 2^812609073792 is an apocalyptic number.

It is an amenable number.

812609073792 is an abundant number, since it is smaller than the sum of its proper divisors (1526322100788).

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

812609073792 is a wasteful number, since it uses less digits than its factorization.

812609073792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170130 (or 170115 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 812609073792 in words is "eight hundred twelve billion, six hundred nine million, seventy-three thousand, seven hundred ninety-two".