13245116581 has 16 divisors (see below), whose sum is σ = 14273582400. Its totient is φ = 12250078848.

The previous prime is 13245116567. The next prime is 13245116609. The reversal of 13245116581 is 18561154231.

It is not a de Polignac number, because 13245116581 - 2³³ = 4655181989 is a prime.

It is a super-2 number, since 2×13245116581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13245116581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245116561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3001905 + ... + 3006313.

It is an arithmetic number, because the mean of its divisors is an integer number (892098900).

Almost surely, 2^13245116581 is an apocalyptic number.

It is an amenable number.

13245116581 is a deficient number, since it is larger than the sum of its proper divisors (1028465819).

13245116581 is a wasteful number, since it uses less digits than its factorization.

13245116581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148.

The product of its digits is 28800, while the sum is 37.

The spelling of 13245116581 in words is "thirteen billion, two hundred forty-five million, one hundred sixteen thousand, five hundred eighty-one".