812391822327 has 32 divisors (see below), whose sum is σ = 1179776419840. Its totient is φ = 495358416000.

The previous prime is 812391822287. The next prime is 812391822349. The reversal of 812391822327 is 723228193218.

It is not a de Polignac number, because 812391822327 - 2¹⁶ = 812391756791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812391822727) 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, 197877 + ... + 1289937.

It is an arithmetic number, because the mean of its divisors is an integer number (36868013120).

Almost surely, 2^812391822327 is an apocalyptic number.

812391822327 is a deficient number, since it is larger than the sum of its proper divisors (367384597513).

812391822327 is a wasteful number, since it uses less digits than its factorization.

812391822327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092535.

The product of its digits is 580608, while the sum is 48.

The spelling of 812391822327 in words is "eight hundred twelve billion, three hundred ninety-one million, eight hundred twenty-two thousand, three hundred twenty-seven".