20426445460451 has 4 divisors (see below), whose sum is σ = 20431289298072. Its totient is φ = 20421601622832.

The previous prime is 20426445460403. The next prime is 20426445460453. The reversal of 20426445460451 is 15406454462402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20426445460451 - 2¹⁸ = 20426445198307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20426445460396 and 20426445460405.

It is not an unprimeable number, because it can be changed into a prime (20426445460453) 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 3 ways as a sum of consecutive naturals, for example, 2421912485 + ... + 2421920918.

It is an arithmetic number, because the mean of its divisors is an integer number (5107822324518).

Almost surely, 2^{20426445460451} is an apocalyptic number.

20426445460451 is a deficient number, since it is larger than the sum of its proper divisors (4843837621).

20426445460451 is an equidigital number, since it uses as much as digits as its factorization.

20426445460451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843837620.

The product of its (nonzero) digits is 3686400, while the sum is 47.

The spelling of 20426445460451 in words is "twenty trillion, four hundred twenty-six billion, four hundred forty-five million, four hundred sixty thousand, four hundred fifty-one".