13521510445 has 8 divisors (see below), whose sum is σ = 16227875736. Its totient is φ = 10815832896.

The previous prime is 13521510427. The next prime is 13521510517. The reversal of 13521510445 is 54401512531.

13521510445 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 1332688036 + 12188822409 = 36506^2 + 110403^2 .

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 13521510445 - 2²⁹ = 12984639533 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 127642 + ... + 208171.

It is an arithmetic number, because the mean of its divisors is an integer number (2028484467).

Almost surely, 2^13521510445 is an apocalyptic number.

It is an amenable number.

13521510445 is a deficient number, since it is larger than the sum of its proper divisors (2706365291).

13521510445 is an equidigital number, since it uses as much as digits as its factorization.

13521510445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343871.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 13521510445 in words is "thirteen billion, five hundred twenty-one million, five hundred ten thousand, four hundred forty-five".