812832780799 has 4 divisors (see below), whose sum is σ = 875358379336. Its totient is φ = 750307182264.

The previous prime is 812832780757. The next prime is 812832780803. The reversal of 812832780799 is 997087238218.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 812832780799 - 2⁷ = 812832780671 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 812832780799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812832783799) 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, 31262799249 + ... + 31262799274.

It is an arithmetic number, because the mean of its divisors is an integer number (218839594834).

Almost surely, 2^812832780799 is an apocalyptic number.

812832780799 is a deficient number, since it is larger than the sum of its proper divisors (62525598537).

812832780799 is a wasteful number, since it uses less digits than its factorization.

812832780799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62525598536.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 812832780799 in words is "eight hundred twelve billion, eight hundred thirty-two million, seven hundred eighty thousand, seven hundred ninety-nine".