812294300905 has 4 divisors (see below), whose sum is σ = 974753161092. Its totient is φ = 649835440720.

The previous prime is 812294300893. The next prime is 812294300927. The reversal of 812294300905 is 509003492218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 586445045209 + 225849255696 = 765797^2 + 475236^2 .

It is not a de Polignac number, because 812294300905 - 2²¹ = 812292203753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81229430086 + ... + 81229430095.

It is an arithmetic number, because the mean of its divisors is an integer number (243688290273).

Almost surely, 2^812294300905 is an apocalyptic number.

It is an amenable number.

812294300905 is a deficient number, since it is larger than the sum of its proper divisors (162458860187).

812294300905 is a wasteful number, since it uses less digits than its factorization.

812294300905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162458860186.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 812294300905 in words is "eight hundred twelve billion, two hundred ninety-four million, three hundred thousand, nine hundred five".