13447252165 has 8 divisors (see below), whose sum is σ = 16196691960. Its totient is φ = 10717808832.

The previous prime is 13447252157. The next prime is 13447252267. The reversal of 13447252165 is 56125274431.

It can be written as a sum of positive squares in 4 ways, for example, as 95218564 + 13352033601 = 9758^2 + 115551^2 .

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 13447252165 - 2³ = 13447252157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4997634 + ... + 5000323.

It is an arithmetic number, because the mean of its divisors is an integer number (2024586495).

Almost surely, 2^13447252165 is an apocalyptic number.

It is an amenable number.

13447252165 is a deficient number, since it is larger than the sum of its proper divisors (2749439795).

13447252165 is an equidigital number, since it uses as much as digits as its factorization.

13447252165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998231.

The product of its digits is 201600, while the sum is 40.

The spelling of 13447252165 in words is "thirteen billion, four hundred forty-seven million, two hundred fifty-two thousand, one hundred sixty-five".