2219286706561 has 8 divisors (see below), whose sum is σ = 2219834767464. Its totient is φ = 2218738730880.

The previous prime is 2219286706531. The next prime is 2219286706573. The reversal of 2219286706561 is 1656076829122.

It can be written as a sum of positive squares in 4 ways, for example, as 15368312961 + 2203918393600 = 123969^2 + 1484560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2219286706561 - 2¹¹ = 2219286704513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219286706531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96744285 + ... + 96767221.

It is an arithmetic number, because the mean of its divisors is an integer number (277479345933).

Almost surely, 2^{2219286706561} is an apocalyptic number.

It is an amenable number.

2219286706561 is a deficient number, since it is larger than the sum of its proper divisors (548060903).

2219286706561 is an equidigital number, since it uses as much as digits as its factorization.

2219286706561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42611.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 2219286706561 in words is "two trillion, two hundred nineteen billion, two hundred eighty-six million, seven hundred six thousand, five hundred sixty-one".