220641748849 has 2 divisors, whose sum is σ = 220641748850. Its totient is φ = 220641748848.

The previous prime is 220641748813. The next prime is 220641748853. The reversal of 220641748849 is 948847146022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220430250000 + 211498849 = 469500^2 + 14543^2 .

It is a cyclic number.

It is not a de Polignac number, because 220641748849 - 2⁷ = 220641748721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220641748849.

It is not a weakly prime, because it can be changed into another prime (220641740849) 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, 110320874424 + 110320874425.

It is an arithmetic number, because the mean of its divisors is an integer number (110320874425).

Almost surely, 2^220641748849 is an apocalyptic number.

It is an amenable number.

220641748849 is a deficient number, since it is larger than the sum of its proper divisors (1).

220641748849 is an equidigital number, since it uses as much as digits as its factorization.

220641748849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 220641748849 in words is "two hundred twenty billion, six hundred forty-one million, seven hundred forty-eight thousand, eight hundred forty-nine".