26204312405 has 8 divisors (see below), whose sum is σ = 31446058200. Its totient is φ = 20962861056.

The previous prime is 26204312377. The next prime is 26204312429. The reversal of 26204312405 is 50421340262.

It can be written as a sum of positive squares in 4 ways, for example, as 721298449 + 25483013956 = 26857^2 + 159634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26204312405 - 2⁶ = 26204312341 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 257981 + ... + 344909.

It is an arithmetic number, because the mean of its divisors is an integer number (3930757275).

Almost surely, 2^26204312405 is an apocalyptic number.

It is an amenable number.

26204312405 is a deficient number, since it is larger than the sum of its proper divisors (5241745795).

26204312405 is an equidigital number, since it uses as much as digits as its factorization.

26204312405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147223.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 26204312405 its reverse (50421340262), we get a palindrome (76625652667).

The spelling of 26204312405 in words is "twenty-six billion, two hundred four million, three hundred twelve thousand, four hundred five".