13532201666 has 8 divisors (see below), whose sum is σ = 20300914764. Its totient is φ = 6765230080.

The previous prime is 13532201563. The next prime is 13532201681. The reversal of 13532201666 is 66610223531.

It can be written as a sum of positive squares in 2 ways, for example, as 11910448225 + 1621753441 = 109135^2 + 40271^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 415775 + ... + 447138.

Almost surely, 2^13532201666 is an apocalyptic number.

13532201666 is a deficient number, since it is larger than the sum of its proper divisors (6768713098).

13532201666 is an equidigital number, since it uses as much as digits as its factorization.

13532201666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870756.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 13532201666 in words is "thirteen billion, five hundred thirty-two million, two hundred one thousand, six hundred sixty-six".