220641748813 has 2 divisors, whose sum is σ = 220641748814. Its totient is φ = 220641748812.

The previous prime is 220641748807. The next prime is 220641748849. The reversal of 220641748813 is 318847146022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173458089289 + 47183659524 = 416483^2 + 217218^2 .

It is a cyclic number.

It is not a de Polignac number, because 220641748813 - 2⁵ = 220641748781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220641748853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110320874406 + 110320874407.

It is an arithmetic number, because the mean of its divisors is an integer number (110320874407).

Almost surely, 2^220641748813 is an apocalyptic number.

It is an amenable number.

220641748813 is a deficient number, since it is larger than the sum of its proper divisors (1).

220641748813 is an equidigital number, since it uses as much as digits as its factorization.

220641748813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 220641748813 in words is "two hundred twenty billion, six hundred forty-one million, seven hundred forty-eight thousand, eight hundred thirteen".