812204440073 has 32 divisors (see below), whose sum is σ = 931572182016. Its totient is φ = 701486972928.

The previous prime is 812204440063. The next prime is 812204440079. The reversal of 812204440073 is 370044402218.

It is not a de Polignac number, because 812204440073 - 2⁶ = 812204440009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (812204440079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71096840 + ... + 71108262.

It is an arithmetic number, because the mean of its divisors is an integer number (29111630688).

Almost surely, 2^812204440073 is an apocalyptic number.

It is an amenable number.

812204440073 is a deficient number, since it is larger than the sum of its proper divisors (119367741943).

812204440073 is a wasteful number, since it uses less digits than its factorization.

812204440073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13313.

The product of its (nonzero) digits is 43008, while the sum is 35.

The spelling of 812204440073 in words is "eight hundred twelve billion, two hundred four million, four hundred forty thousand, seventy-three".