823669605263 has 4 divisors (see below), whose sum is σ = 830958716928. Its totient is φ = 816380493600.

The previous prime is 823669605259. The next prime is 823669605313. The reversal of 823669605263 is 362506966328.

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 823669605263 - 2² = 823669605259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823669605199 and 823669605208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823669605203) 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, 3644555663 + ... + 3644555888.

It is an arithmetic number, because the mean of its divisors is an integer number (207739679232).

Almost surely, 2^823669605263 is an apocalyptic number.

823669605263 is a deficient number, since it is larger than the sum of its proper divisors (7289111665).

823669605263 is a wasteful number, since it uses less digits than its factorization.

823669605263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289111664.

The product of its (nonzero) digits is 16796160, while the sum is 56.

The spelling of 823669605263 in words is "eight hundred twenty-three billion, six hundred sixty-nine million, six hundred five thousand, two hundred sixty-three".