812478484322 has 6 divisors (see below), whose sum is σ = 1218719638593. Its totient is φ = 406238604792.

The previous prime is 812478484313. The next prime is 812478484331. The reversal of 812478484322 is 223484874218.

It is an interprime number because it is at equal distance from previous prime (812478484313) and next prime (812478484331).

It can be written as a sum of positive squares in 2 ways, for example, as 750993826801 + 61484657521 = 866599^2 + 247961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=637369.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 956054 + ... + 1593422.

Almost surely, 2^812478484322 is an apocalyptic number.

812478484322 is a deficient number, since it is larger than the sum of its proper divisors (406241154271).

812478484322 is an frugal number, since it uses more digits than its factorization.

812478484322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274740 (or 637371 counting only the distinct ones).

The product of its digits is 5505024, while the sum is 53.

The spelling of 812478484322 in words is "eight hundred twelve billion, four hundred seventy-eight million, four hundred eighty-four thousand, three hundred twenty-two".