13643443244523 has 32 divisors (see below), whose sum is σ = 18846876121920. Its totient is φ = 8772892508160.

The previous prime is 13643443244471. The next prime is 13643443244531. The reversal of 13643443244523 is 32544234434631.

It is not a de Polignac number, because 13643443244523 - 2¹⁰ = 13643443243499 is a prime.

It is a super-2 number, since 2×13643443244523² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13643443244593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84791715 + ... + 84952467.

It is an arithmetic number, because the mean of its divisors is an integer number (588964878810).

Almost surely, 2^{13643443244523} is an apocalyptic number.

13643443244523 is a deficient number, since it is larger than the sum of its proper divisors (5203432877397).

13643443244523 is a wasteful number, since it uses less digits than its factorization.

13643443244523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168639.

The product of its digits is 9953280, while the sum is 48.

The spelling of 13643443244523 in words is "thirteen trillion, six hundred forty-three billion, four hundred forty-three million, two hundred forty-four thousand, five hundred twenty-three".