23320996566 has 16 divisors (see below), whose sum is σ = 53305135104. Its totient is φ = 6663141864.

The previous prime is 23320996553. The next prime is 23320996571. The reversal of 23320996566 is 66569902332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277630870 + ... + 277630953.

It is an arithmetic number, because the mean of its divisors is an integer number (3331570944).

Almost surely, 2^23320996566 is an apocalyptic number.

23320996566 is an abundant number, since it is smaller than the sum of its proper divisors (29984138538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23320996566 is a wasteful number, since it uses less digits than its factorization.

23320996566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555261835.

The product of its (nonzero) digits is 3149280, while the sum is 51.

The spelling of 23320996566 in words is "twenty-three billion, three hundred twenty million, nine hundred ninety-six thousand, five hundred sixty-six".