812464518436 has 12 divisors (see below), whose sum is σ = 1496645165680. Its totient is φ = 384851613960.

The previous prime is 812464518427. The next prime is 812464518461. The reversal of 812464518436 is 634815464218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5345161230 + ... + 5345161381.

Almost surely, 2^812464518436 is an apocalyptic number.

It is an amenable number.

812464518436 is a deficient number, since it is larger than the sum of its proper divisors (684180647244).

812464518436 is a wasteful number, since it uses less digits than its factorization.

812464518436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10690322634 (or 10690322632 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 52.

The spelling of 812464518436 in words is "eight hundred twelve billion, four hundred sixty-four million, five hundred eighteen thousand, four hundred thirty-six".