20126256432424 has 48 divisors (see below), whose sum is σ = 38806779832380. Its totient is φ = 9785453391360.

The previous prime is 20126256432419. The next prime is 20126256432427. The reversal of 20126256432424 is 42423465262102.

It can be written as a sum of positive squares in 6 ways, for example, as 20125254709924 + 1001722500 = 4486118^2 + 31650^2 .

It is not an unprimeable number, because it can be changed into a prime (20126256432427) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18314494 + ... + 19382290.

Almost surely, 2^{20126256432424} is an apocalyptic number.

It is an amenable number.

20126256432424 is a deficient number, since it is larger than the sum of its proper divisors (18680523399956).

20126256432424 is a wasteful number, since it uses less digits than its factorization.

20126256432424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069598 (or 1069557 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 20126256432424 in words is "twenty trillion, one hundred twenty-six billion, two hundred fifty-six million, four hundred thirty-two thousand, four hundred twenty-four".