20126266443639 has 12 divisors (see below), whose sum is σ = 29071314820600. Its totient is φ = 13417492007664.

The previous prime is 20126266443629. The next prime is 20126266443671. The reversal of 20126266443639 is 93634466262102.

20126266443639 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 626 + 6 + 4 + 4 + 3 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 20126266443639 - 2⁵ = 20126266443607 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 (20126266443629) 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 11 ways as a sum of consecutive naturals, for example, 8593692 + ... + 10681950.

Almost surely, 2^{20126266443639} is an apocalyptic number.

20126266443639 is a deficient number, since it is larger than the sum of its proper divisors (8945048376961).

20126266443639 is a wasteful number, since it uses less digits than its factorization.

20126266443639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159134 (or 3159131 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 54.

The spelling of 20126266443639 in words is "twenty trillion, one hundred twenty-six billion, two hundred sixty-six million, four hundred forty-three thousand, six hundred thirty-nine".