20848684823 has 4 divisors (see below), whose sum is σ = 20852724960. Its totient is φ = 20844644688.

The previous prime is 20848684807. The next prime is 20848684861. The reversal of 20848684823 is 32848684802.

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 20848684823 - 2⁴ = 20848684807 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 (20848684873) 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, 2012318 + ... + 2022651.

It is an arithmetic number, because the mean of its divisors is an integer number (5213181240).

Almost surely, 2^20848684823 is an apocalyptic number.

20848684823 is a deficient number, since it is larger than the sum of its proper divisors (4040137).

20848684823 is an equidigital number, since it uses as much as digits as its factorization.

20848684823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040136.

The product of its (nonzero) digits is 4718592, while the sum is 53.

The spelling of 20848684823 in words is "twenty billion, eight hundred forty-eight million, six hundred eighty-four thousand, eight hundred twenty-three".