2166224635361 has 8 divisors (see below), whose sum is σ = 2171055324480. Its totient is φ = 2161399325328.

The previous prime is 2166224635321. The next prime is 2166224635381. The reversal of 2166224635361 is 1635364226612.

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 2166224635361 - 2¹⁸ = 2166224373217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166224635321) 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, 537911 + ... + 2149836.

It is an arithmetic number, because the mean of its divisors is an integer number (271381915560).

Almost surely, 2^{2166224635361} is an apocalyptic number.

It is an amenable number.

2166224635361 is a deficient number, since it is larger than the sum of its proper divisors (4830689119).

2166224635361 is an equidigital number, since it uses as much as digits as its factorization.

2166224635361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689543.

The product of its digits is 1866240, while the sum is 47.

The spelling of 2166224635361 in words is "two trillion, one hundred sixty-six billion, two hundred twenty-four million, six hundred thirty-five thousand, three hundred sixty-one".