21814565753 has 2 divisors, whose sum is σ = 21814565754. Its totient is φ = 21814565752.

The previous prime is 21814565749. The next prime is 21814565761. The reversal of 21814565753 is 35756541812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19412291584 + 2402274169 = 139328^2 + 49013^2 .

It is a cyclic number.

It is not a de Polignac number, because 21814565753 - 2² = 21814565749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21814565698 and 21814565707.

It is not a weakly prime, because it can be changed into another prime (21814565723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10907282876 + 10907282877.

It is an arithmetic number, because the mean of its divisors is an integer number (10907282877).

Almost surely, 2^21814565753 is an apocalyptic number.

It is an amenable number.

21814565753 is a deficient number, since it is larger than the sum of its proper divisors (1).

21814565753 is an equidigital number, since it uses as much as digits as its factorization.

21814565753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 47.

The spelling of 21814565753 in words is "twenty-one billion, eight hundred fourteen million, five hundred sixty-five thousand, seven hundred fifty-three".