13528808066 has 4 divisors (see below), whose sum is σ = 20293212102. Its totient is φ = 6764404032.

The previous prime is 13528808039. The next prime is 13528808087. The reversal of 13528808066 is 66080882531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11373156025 + 2155652041 = 106645^2 + 46429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13528808066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382202015 + ... + 3382202018.

Almost surely, 2^13528808066 is an apocalyptic number.

13528808066 is a deficient number, since it is larger than the sum of its proper divisors (6764404036).

13528808066 is an equidigital number, since it uses as much as digits as its factorization.

13528808066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764404035.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 13528808066 in words is "thirteen billion, five hundred twenty-eight million, eight hundred eight thousand, sixty-six".