13241335581 has 24 divisors (see below), whose sum is σ = 21317325120. Its totient is φ = 7871008896.

The previous prime is 13241335579. The next prime is 13241335643. The reversal of 13241335581 is 18553314231.

13241335581 is a `hidden beast` number, since 1 + 3 + 2 + 41 + 3 + 35 + 581 = 666.

It is not a de Polignac number, because 13241335581 - 2¹ = 13241335579 is a prime.

It is a super-2 number, since 2×13241335581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13241335781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2274585 + ... + 2280398.

It is an arithmetic number, because the mean of its divisors is an integer number (888221880).

Almost surely, 2^13241335581 is an apocalyptic number.

It is an amenable number.

13241335581 is a deficient number, since it is larger than the sum of its proper divisors (8075989539).

13241335581 is a wasteful number, since it uses less digits than its factorization.

13241335581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555025 (or 4555022 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 13241335581 in words is "thirteen billion, two hundred forty-one million, three hundred thirty-five thousand, five hundred eighty-one".