220150566509 has 2 divisors, whose sum is σ = 220150566510. Its totient is φ = 220150566508.

The previous prime is 220150566473. The next prime is 220150566511. The reversal of 220150566509 is 905665051022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198784897609 + 21365668900 = 445853^2 + 146170^2 .

It is a cyclic number.

It is not a de Polignac number, because 220150566509 - 2¹² = 220150562413 is a prime.

Together with 220150566511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220150563509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110075283254 + 110075283255.

It is an arithmetic number, because the mean of its divisors is an integer number (110075283255).

Almost surely, 2^220150566509 is an apocalyptic number.

It is an amenable number.

220150566509 is a deficient number, since it is larger than the sum of its proper divisors (1).

220150566509 is an equidigital number, since it uses as much as digits as its factorization.

220150566509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 220150566509 in words is "two hundred twenty billion, one hundred fifty million, five hundred sixty-six thousand, five hundred nine".