812464628485089 has 4 divisors (see below), whose sum is σ = 1083286171313456. Its totient is φ = 541643085656724.

The previous prime is 812464628485043. The next prime is 812464628485141. The reversal of 812464628485089 is 980584826464218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 812464628485089 - 2³⁷ = 812327189531617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 812464628485089.

It is not an unprimeable number, because it can be changed into a prime (812464628485589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135410771414179 + ... + 135410771414184.

It is an arithmetic number, because the mean of its divisors is an integer number (270821542828364).

Almost surely, 2^{812464628485089} is an apocalyptic number.

It is an amenable number.

812464628485089 is a deficient number, since it is larger than the sum of its proper divisors (270821542828367).

812464628485089 is a wasteful number, since it uses less digits than its factorization.

812464628485089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270821542828366.

The product of its (nonzero) digits is 1698693120, while the sum is 75.

The spelling of 812464628485089 in words is "eight hundred twelve trillion, four hundred sixty-four billion, six hundred twenty-eight million, four hundred eighty-five thousand, eighty-nine".