812275617813 has 16 divisors (see below), whose sum is σ = 1185851569152. Its totient is φ = 490471686000.

The previous prime is 812275617793. The next prime is 812275617823. The reversal of 812275617813 is 318716572218.

812275617813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 812275617813 - 2⁸ = 812275617557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812275617823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45405103 + ... + 45422988.

It is an arithmetic number, because the mean of its divisors is an integer number (74115723072).

Almost surely, 2^812275617813 is an apocalyptic number.

It is an amenable number.

812275617813 is a deficient number, since it is larger than the sum of its proper divisors (373575951339).

812275617813 is a wasteful number, since it uses less digits than its factorization.

812275617813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90828376.

The product of its digits is 1128960, while the sum is 51.

The spelling of 812275617813 in words is "eight hundred twelve billion, two hundred seventy-five million, six hundred seventeen thousand, eight hundred thirteen".