20814868814 has 16 divisors (see below), whose sum is σ = 32184505536. Its totient is φ = 10088776800.

The previous prime is 20814868801. The next prime is 20814868817. The reversal of 20814868814 is 41886841802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20814868817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498917 + ... + 539024.

It is an arithmetic number, because the mean of its divisors is an integer number (2011531596).

Almost surely, 2^20814868814 is an apocalyptic number.

20814868814 is a deficient number, since it is larger than the sum of its proper divisors (11369636722).

20814868814 is a wasteful number, since it uses less digits than its factorization.

20814868814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038251.

The product of its (nonzero) digits is 786432, while the sum is 50.

The spelling of 20814868814 in words is "twenty billion, eight hundred fourteen million, eight hundred sixty-eight thousand, eight hundred fourteen".