20266444406266 has 8 divisors (see below), whose sum is σ = 30419291963700. Its totient is φ = 10126680418368.

The previous prime is 20266444406261. The next prime is 20266444406297. The reversal of 20266444406266 is 66260444466202.

It can be written as a sum of positive squares in 2 ways, for example, as 19178960425641 + 1087483980625 = 4379379^2 + 1042825^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20266444406261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270888511 + ... + 3270894706.

Almost surely, 2^{20266444406266} is an apocalyptic number.

20266444406266 is a deficient number, since it is larger than the sum of its proper divisors (10152847557434).

20266444406266 is a wasteful number, since it uses less digits than its factorization.

20266444406266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541784768.

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 20266444406266 in words is "twenty trillion, two hundred sixty-six billion, four hundred forty-four million, four hundred six thousand, two hundred sixty-six".