23123320205266 has 4 divisors (see below), whose sum is σ = 34684980307902. Its totient is φ = 11561660102632.

The previous prime is 23123320205231. The next prime is 23123320205371. The reversal of 23123320205266 is 66250202332132.

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

It can be written as a sum of positive squares in only one way, i.e., 18802014704641 + 4321305500625 = 4336129^2 + 2078775^2 .

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 as a sum of consecutive naturals, namely, 5780830051315 + ... + 5780830051318.

Almost surely, 2^{23123320205266} is an apocalyptic number.

23123320205266 is a deficient number, since it is larger than the sum of its proper divisors (11561660102636).

23123320205266 is a wasteful number, since it uses less digits than its factorization.

23123320205266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561660102635.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 23123320205266 its reverse (66250202332132), we get a palindrome (89373522537398).

The spelling of 23123320205266 in words is "twenty-three trillion, one hundred twenty-three billion, three hundred twenty million, two hundred five thousand, two hundred sixty-six".