812288763792 has 120 divisors (see below), whose sum is σ = 2485323929088. Its totient is φ = 245613945600.

The previous prime is 812288763763. The next prime is 812288763809. The reversal of 812288763792 is 297367882218.

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 23 ways as a sum of consecutive naturals, for example, 174033 + ... + 1286415.

Almost surely, 2^812288763792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812288763792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242661964544).

812288763792 is an abundant number, since it is smaller than the sum of its proper divisors (1673035165296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812288763792 is a wasteful number, since it uses less digits than its factorization.

812288763792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112869 (or 1112860 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The spelling of 812288763792 in words is "eight hundred twelve billion, two hundred eighty-eight million, seven hundred sixty-three thousand, seven hundred ninety-two".