13549745113 has 16 divisors (see below), whose sum is σ = 13771319184. Its totient is φ = 13330437120.

The previous prime is 13549745107. The next prime is 13549745129. The reversal of 13549745113 is 31154794531.

It can be written as a sum of positive squares in 8 ways, for example, as 1411655184 + 12138089929 = 37572^2 + 110173^2 .

It is a cyclic number.

It is not a de Polignac number, because 13549745113 - 2⁹ = 13549744601 is a prime.

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 13549745113.

It is not an unprimeable number, because it can be changed into a prime (13549745513) 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, 13270543 + ... + 13271563.

It is an arithmetic number, because the mean of its divisors is an integer number (860707449).

Almost surely, 2^13549745113 is an apocalyptic number.

It is an amenable number.

13549745113 is a deficient number, since it is larger than the sum of its proper divisors (221574071).

13549745113 is a wasteful number, since it uses less digits than its factorization.

13549745113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932.

The product of its digits is 226800, while the sum is 43.

The spelling of 13549745113 in words is "thirteen billion, five hundred forty-nine million, seven hundred forty-five thousand, one hundred thirteen".