222338561671865 has 4 divisors (see below), whose sum is σ = 266806274006244. Its totient is φ = 177870849337488.

The previous prime is 222338561671747. The next prime is 222338561671903. The reversal of 222338561671865 is 568176165833222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95813498902969 + 126525062768896 = 9788437^2 + 11248336^2 .

It is a cyclic number.

It is not a de Polignac number, because 222338561671865 - 2¹⁸ = 222338561409721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22233856167182 + ... + 22233856167191.

It is an arithmetic number, because the mean of its divisors is an integer number (66701568501561).

Almost surely, 2^{222338561671865} is an apocalyptic number.

It is an amenable number.

222338561671865 is a deficient number, since it is larger than the sum of its proper divisors (44467712334379).

222338561671865 is an equidigital number, since it uses as much as digits as its factorization.

222338561671865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44467712334378.

The product of its digits is 174182400, while the sum is 65.

The spelling of 222338561671865 in words is "two hundred twenty-two trillion, three hundred thirty-eight billion, five hundred sixty-one million, six hundred seventy-one thousand, eight hundred sixty-five".