220982578849 has 2 divisors, whose sum is σ = 220982578850. Its totient is φ = 220982578848.

The previous prime is 220982578799. The next prime is 220982578871. The reversal of 220982578849 is 948875289022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167091277824 + 53891301025 = 408768^2 + 232145^2 .

It is a cyclic number.

It is not a de Polignac number, because 220982578849 - 2⁹ = 220982578337 is a prime.

It is not a weakly prime, because it can be changed into another prime (220982578249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110491289424 + 110491289425.

It is an arithmetic number, because the mean of its divisors is an integer number (110491289425).

Almost surely, 2^220982578849 is an apocalyptic number.

It is an amenable number.

220982578849 is a deficient number, since it is larger than the sum of its proper divisors (1).

220982578849 is an equidigital number, since it uses as much as digits as its factorization.

220982578849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 220982578849 in words is "two hundred twenty billion, nine hundred eighty-two million, five hundred seventy-eight thousand, eight hundred forty-nine".