26531306105 has 8 divisors (see below), whose sum is σ = 33710365512. Its totient is φ = 19976512768.

The previous prime is 26531306101. The next prime is 26531306119. The reversal of 26531306105 is 50160313562.

It can be written as a sum of positive squares in 4 ways, for example, as 11958953449 + 14572352656 = 109357^2 + 120716^2 .

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 26531306105 - 2² = 26531306101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26531306101) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 156066422 + ... + 156066591.

It is an arithmetic number, because the mean of its divisors is an integer number (4213795689).

Almost surely, 2^26531306105 is an apocalyptic number.

It is an amenable number.

26531306105 is a deficient number, since it is larger than the sum of its proper divisors (7179059407).

26531306105 is a wasteful number, since it uses less digits than its factorization.

26531306105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312133035.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 26531306105 its reverse (50160313562), we get a palindrome (76691619667).

The spelling of 26531306105 in words is "twenty-six billion, five hundred thirty-one million, three hundred six thousand, one hundred five".