6822777808389 has 4 divisors (see below), whose sum is σ = 9097037077856. Its totient is φ = 4548518538924.

The previous prime is 6822777808387. The next prime is 6822777808393. The reversal of 6822777808389 is 9838087772286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6822777808389 - 2¹ = 6822777808387 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 6822777808389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6822777808387) 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, 1137129634729 + ... + 1137129634734.

It is an arithmetic number, because the mean of its divisors is an integer number (2274259269464).

Almost surely, 2^{6822777808389} is an apocalyptic number.

It is an amenable number.

6822777808389 is a deficient number, since it is larger than the sum of its proper divisors (2274259269467).

6822777808389 is a wasteful number, since it uses less digits than its factorization.

6822777808389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274259269466.

The product of its (nonzero) digits is 910393344, while the sum is 75.

The spelling of 6822777808389 in words is "six trillion, eight hundred twenty-two billion, seven hundred seventy-seven million, eight hundred eight thousand, three hundred eighty-nine".