13088133581 has 4 divisors (see below), whose sum is σ = 13217719164. Its totient is φ = 12958548000.

The previous prime is 13088133571. The next prime is 13088133589. The reversal of 13088133581 is 18533188031.

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 8416411081 + 4671722500 = 91741^2 + 68350^2 .

It is a cyclic number.

It is not a de Polignac number, because 13088133581 - 2¹⁰ = 13088132557 is a prime.

It is a super-2 number, since 2×13088133581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13088133589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64792640 + ... + 64792841.

It is an arithmetic number, because the mean of its divisors is an integer number (3304429791).

Almost surely, 2^13088133581 is an apocalyptic number.

It is an amenable number.

13088133581 is a deficient number, since it is larger than the sum of its proper divisors (129585583).

13088133581 is a wasteful number, since it uses less digits than its factorization.

13088133581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129585582.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 13088133581 in words is "thirteen billion, eighty-eight million, one hundred thirty-three thousand, five hundred eighty-one".