223556132165 has 8 divisors (see below), whose sum is σ = 268273448088. Its totient is φ = 178840846080.

The previous prime is 223556132153. The next prime is 223556132203. The reversal of 223556132165 is 561231655322.

It can be written as a sum of positive squares in 4 ways, for example, as 136100490724 + 87455641441 = 368918^2 + 295729^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-223556132165 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253616 + ... + 715145.

It is an arithmetic number, because the mean of its divisors is an integer number (33534181011).

Almost surely, 2^223556132165 is an apocalyptic number.

It is an amenable number.

223556132165 is a deficient number, since it is larger than the sum of its proper divisors (44717315923).

223556132165 is an equidigital number, since it uses as much as digits as its factorization.

223556132165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014919.

The product of its digits is 324000, while the sum is 41.

Adding to 223556132165 its reverse (561231655322), we get a palindrome (784787787487).

The spelling of 223556132165 in words is "two hundred twenty-three billion, five hundred fifty-six million, one hundred thirty-two thousand, one hundred sixty-five".