66266623263 has 16 divisors (see below), whose sum is σ = 88965418496. Its totient is φ = 43873202880.

The previous prime is 66266623253. The next prime is 66266623277. The reversal of 66266623263 is 36232666266.

It is not a de Polignac number, because 66266623263 - 2²⁵ = 66233068831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66266623253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 597843 + ... + 699963.

It is an arithmetic number, because the mean of its divisors is an integer number (5560338656).

Almost surely, 2^66266623263 is an apocalyptic number.

66266623263 is a deficient number, since it is larger than the sum of its proper divisors (22698795233).

66266623263 is a wasteful number, since it uses less digits than its factorization.

66266623263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103614.

The product of its digits is 3359232, while the sum is 48.

The spelling of 66266623263 in words is "sixty-six billion, two hundred sixty-six million, six hundred twenty-three thousand, two hundred sixty-three".