20445231663266 has 8 divisors (see below), whose sum is σ = 30717391676880. Its totient is φ = 10206101104308.

The previous prime is 20445231663253. The next prime is 20445231663289. The reversal of 20445231663266 is 66236613254402.

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

It is a super-2 number, since 2×20445231663266² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 8257362116 + ... + 8257364591.

It is an arithmetic number, because the mean of its divisors is an integer number (3839673959610).

Almost surely, 2^{20445231663266} is an apocalyptic number.

20445231663266 is a deficient number, since it is larger than the sum of its proper divisors (10272160013614).

20445231663266 is a wasteful number, since it uses less digits than its factorization.

20445231663266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16514727328.

The product of its (nonzero) digits is 7464960, while the sum is 50.

The spelling of 20445231663266 in words is "twenty trillion, four hundred forty-five billion, two hundred thirty-one million, six hundred sixty-three thousand, two hundred sixty-six".