20251126454643 has 24 divisors (see below), whose sum is σ = 33431180047200. Its totient is φ = 11571812964864.

The previous prime is 20251126454639. The next prime is 20251126454681. The reversal of 20251126454643 is 34645462115202.

It is a happy number.

20251126454643 is a `hidden beast` number, since 2 + 0 + 2 + 5 + 1 + 1 + 2 + 64 + 546 + 43 = 666.

It is not a de Polignac number, because 20251126454643 - 2² = 20251126454639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20251126454623) 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 23 ways as a sum of consecutive naturals, for example, 749598 + ... + 6408131.

It is an arithmetic number, because the mean of its divisors is an integer number (1392965835300).

Almost surely, 2^{20251126454643} is an apocalyptic number.

20251126454643 is a deficient number, since it is larger than the sum of its proper divisors (13180053592557).

20251126454643 is a wasteful number, since it uses less digits than its factorization.

20251126454643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202651 (or 7202648 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

Adding to 20251126454643 its reverse (34645462115202), we get a palindrome (54896588569845).

The spelling of 20251126454643 in words is "twenty trillion, two hundred fifty-one billion, one hundred twenty-six million, four hundred fifty-four thousand, six hundred forty-three".