13112123545 has 16 divisors (see below), whose sum is σ = 16933233168. Its totient is φ = 9710807040.

The previous prime is 13112123533. The next prime is 13112123551. The reversal of 13112123545 is 54532121131.

It can be written as a sum of positive squares in 8 ways, for example, as 3685461264 + 9426662281 = 60708^2 + 97091^2 .

It is not a de Polignac number, because 13112123545 - 2⁹ = 13112123033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259244 + ... + 1269613.

It is an arithmetic number, because the mean of its divisors is an integer number (1058327073).

Almost surely, 2^13112123545 is an apocalyptic number.

It is an amenable number.

13112123545 is a deficient number, since it is larger than the sum of its proper divisors (3821109623).

13112123545 is a wasteful number, since it uses less digits than its factorization.

13112123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528940.

The product of its digits is 3600, while the sum is 28.

Adding to 13112123545 its reverse (54532121131), we get a palindrome (67644244676).

The spelling of 13112123545 in words is "thirteen billion, one hundred twelve million, one hundred twenty-three thousand, five hundred forty-five".