2223513640165 has 4 divisors (see below), whose sum is σ = 2668216368204. Its totient is φ = 1778810912128.

The previous prime is 2223513640111. The next prime is 2223513640181. The reversal of 2223513640165 is 5610463153222.

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 1644698521764 + 578815118401 = 1282458^2 + 760799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223513640165 - 2⁷ = 2223513640037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222351364012 + ... + 222351364021.

It is an arithmetic number, because the mean of its divisors is an integer number (667054092051).

Almost surely, 2^{2223513640165} is an apocalyptic number.

It is an amenable number.

2223513640165 is a deficient number, since it is larger than the sum of its proper divisors (444702728039).

2223513640165 is an equidigital number, since it uses as much as digits as its factorization.

2223513640165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444702728038.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 2223513640165 its reverse (5610463153222), we get a palindrome (7833976793387).

The spelling of 2223513640165 in words is "two trillion, two hundred twenty-three billion, five hundred thirteen million, six hundred forty thousand, one hundred sixty-five".