220009858909 has 2 divisors, whose sum is σ = 220009858910. Its totient is φ = 220009858908.

The previous prime is 220009858891. The next prime is 220009858931. The reversal of 220009858909 is 909858900022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124020187225 + 95989671684 = 352165^2 + 309822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220009858909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220009858109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110004929454 + 110004929455.

It is an arithmetic number, because the mean of its divisors is an integer number (110004929455).

Almost surely, 2^220009858909 is an apocalyptic number.

It is an amenable number.

220009858909 is a deficient number, since it is larger than the sum of its proper divisors (1).

220009858909 is an equidigital number, since it uses as much as digits as its factorization.

220009858909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 220009858909 in words is "two hundred twenty billion, nine million, eight hundred fifty-eight thousand, nine hundred nine".