26746280005 has 4 divisors (see below), whose sum is σ = 32095536012. Its totient is φ = 21397024000.

The previous prime is 26746279969. The next prime is 26746280009. The reversal of 26746280005 is 50008264762.

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 19198319364 + 7547960641 = 138558^2 + 86879^2 .

It is not a de Polignac number, because 26746280005 - 2²¹ = 26744182853 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26746280005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26746280009) 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 3 ways as a sum of consecutive naturals, for example, 2674627996 + ... + 2674628005.

It is an arithmetic number, because the mean of its divisors is an integer number (8023884003).

Almost surely, 2^26746280005 is an apocalyptic number.

It is an amenable number.

26746280005 is a deficient number, since it is larger than the sum of its proper divisors (5349256007).

26746280005 is an equidigital number, since it uses as much as digits as its factorization.

26746280005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349256006.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 26746280005 in words is "twenty-six billion, seven hundred forty-six million, two hundred eighty thousand, five".