13247528645 has 8 divisors (see below), whose sum is σ = 17119883256. Its totient is φ = 9782790336.

The previous prime is 13247528629. The next prime is 13247528659. The reversal of 13247528645 is 54682574231.

It can be written as a sum of positive squares in 4 ways, for example, as 1668477409 + 11579051236 = 40847^2 + 107606^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13247528645 - 2⁴ = 13247528629 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 13247528645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101904002 + ... + 101904131.

It is an arithmetic number, because the mean of its divisors is an integer number (2139985407).

Almost surely, 2^13247528645 is an apocalyptic number.

It is an amenable number.

13247528645 is a deficient number, since it is larger than the sum of its proper divisors (3872354611).

13247528645 is a wasteful number, since it uses less digits than its factorization.

13247528645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203808151.

The product of its digits is 1612800, while the sum is 47.

The spelling of 13247528645 in words is "thirteen billion, two hundred forty-seven million, five hundred twenty-eight thousand, six hundred forty-five".