26423506544401 has 4 divisors (see below), whose sum is σ = 26428190738404. Its totient is φ = 26418822350400.

The previous prime is 26423506544389. The next prime is 26423506544417. The reversal of 26423506544401 is 10444560532462.

It is a Cunningham number, because it is equal to 5140380²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26124569888400 + 298936656001 = 5111220^2 + 546751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26423506544401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26423516544401) 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, 2342088540 + ... + 2342099821.

It is an arithmetic number, because the mean of its divisors is an integer number (6607047684601).

Almost surely, 2^{26423506544401} is an apocalyptic number.

It is an amenable number.

26423506544401 is a deficient number, since it is larger than the sum of its proper divisors (4684194003).

26423506544401 is an equidigital number, since it uses as much as digits as its factorization.

26423506544401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684194002.

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 26423506544401 in words is "twenty-six trillion, four hundred twenty-three billion, five hundred six million, five hundred forty-four thousand, four hundred one".