220260391717 has 2 divisors, whose sum is σ = 220260391718. Its totient is φ = 220260391716.

The previous prime is 220260391649. The next prime is 220260391721. The reversal of 220260391717 is 717193062022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128747486596 + 91512905121 = 358814^2 + 302511^2 .

It is a cyclic number.

It is not a de Polignac number, because 220260391717 - 2²³ = 220252003109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220260391717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220260391777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110130195858 + 110130195859.

It is an arithmetic number, because the mean of its divisors is an integer number (110130195859).

Almost surely, 2^220260391717 is an apocalyptic number.

It is an amenable number.

220260391717 is a deficient number, since it is larger than the sum of its proper divisors (1).

220260391717 is an equidigital number, since it uses as much as digits as its factorization.

220260391717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 220260391717 in words is "two hundred twenty billion, two hundred sixty million, three hundred ninety-one thousand, seven hundred seventeen".