13112404433505 has 48 divisors (see below), whose sum is σ = 24485593663440. Its totient is φ = 6452936146944.

The previous prime is 13112404433497. The next prime is 13112404433507. The reversal of 13112404433505 is 50533440421131.

13112404433505 is a `hidden beast` number, since 1 + 3 + 112 + 4 + 0 + 4 + 4 + 33 + 505 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1619877289536 + 11492527143969 = 1272744^2 + 3390063^2 .

It is not a de Polignac number, because 13112404433505 - 2³ = 13112404433497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13112404433505.

It is not an unprimeable number, because it can be changed into a prime (13112404433507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2594724 + ... + 5740853.

It is an arithmetic number, because the mean of its divisors is an integer number (510116534655).

Almost surely, 2^{13112404433505} is an apocalyptic number.

13112404433505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13112404433505 is a deficient number, since it is larger than the sum of its proper divisors (11373189229935).

13112404433505 is a wasteful number, since it uses less digits than its factorization.

13112404433505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338290 (or 8338287 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13112404433505 its reverse (50533440421131), we get a palindrome (63645844854636).

The spelling of 13112404433505 in words is "thirteen trillion, one hundred twelve billion, four hundred four million, four hundred thirty-three thousand, five hundred five".