26433730205 has 4 divisors (see below), whose sum is σ = 31720476252. Its totient is φ = 21146984160.

The previous prime is 26433730157. The next prime is 26433730241. The reversal of 26433730205 is 50203733462.

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 16740736996 + 9692993209 = 129386^2 + 98453^2 .

It is not a de Polignac number, because 26433730205 - 2²⁰ = 26432681629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2643373016 + ... + 2643373025.

It is an arithmetic number, because the mean of its divisors is an integer number (7930119063).

Almost surely, 2^26433730205 is an apocalyptic number.

It is an amenable number.

26433730205 is a deficient number, since it is larger than the sum of its proper divisors (5286746047).

26433730205 is an equidigital number, since it uses as much as digits as its factorization.

26433730205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286746046.

The product of its (nonzero) digits is 90720, while the sum is 35.

The spelling of 26433730205 in words is "twenty-six billion, four hundred thirty-three million, seven hundred thirty thousand, two hundred five".