12513102345 has 40 divisors (see below), whose sum is σ = 22449926664. Its totient is φ = 6667992576.

The previous prime is 12513102269. The next prime is 12513102361. The reversal of 12513102345 is 54320131521.

12513102345 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 310 + 2 + 345 = 666.

12513102345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 210743289 + 12302359056 = 14517^2 + 110916^2 .

It is not a de Polignac number, because 12513102345 - 2²¹ = 12511005193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 488497 + ... + 513473.

Almost surely, 2^12513102345 is an apocalyptic number.

12513102345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12513102345 is a deficient number, since it is larger than the sum of its proper divisors (9936824319).

12513102345 is a wasteful number, since it uses less digits than its factorization.

12513102345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26231 (or 26222 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 12513102345 its reverse (54320131521), we get a palindrome (66833233866).

The spelling of 12513102345 in words is "twelve billion, five hundred thirteen million, one hundred two thousand, three hundred forty-five".