26561306359 has 16 divisors (see below), whose sum is σ = 30516782400. Its totient is φ = 22646280960.

The previous prime is 26561306333. The next prime is 26561306441. The reversal of 26561306359 is 95360316562.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26561306359 - 2⁵ = 26561306327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561306159) 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 15 ways as a sum of consecutive naturals, for example, 1722817 + ... + 1738165.

It is an arithmetic number, because the mean of its divisors is an integer number (1907298900).

Almost surely, 2^26561306359 is an apocalyptic number.

26561306359 is a deficient number, since it is larger than the sum of its proper divisors (3955476041).

26561306359 is a wasteful number, since it uses less digits than its factorization.

26561306359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650.

The product of its (nonzero) digits is 874800, while the sum is 46.

The spelling of 26561306359 in words is "twenty-six billion, five hundred sixty-one million, three hundred six thousand, three hundred fifty-nine".