13327080581 has 4 divisors (see below), whose sum is σ = 13396856064. Its totient is φ = 13257305100.

The previous prime is 13327080553. The next prime is 13327080607. The reversal of 13327080581 is 18508072331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13327080581 - 2²² = 13322886277 is a prime.

It is a super-2 number, since 2×13327080581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13327080881) 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, 34887455 + ... + 34887836.

It is an arithmetic number, because the mean of its divisors is an integer number (3349214016).

Almost surely, 2^13327080581 is an apocalyptic number.

It is an amenable number.

13327080581 is a deficient number, since it is larger than the sum of its proper divisors (69775483).

13327080581 is an equidigital number, since it uses as much as digits as its factorization.

13327080581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69775482.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 13327080581 in words is "thirteen billion, three hundred twenty-seven million, eighty thousand, five hundred eighty-one".