13521650566 has 8 divisors (see below), whose sum is σ = 20298045744. Its totient is φ = 6755635320.

The previous prime is 13521650563. The next prime is 13521650567. The reversal of 13521650566 is 66505612531.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521650563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2591725 + ... + 2596936.

It is an arithmetic number, because the mean of its divisors is an integer number (2537255718).

Almost surely, 2^13521650566 is an apocalyptic number.

13521650566 is a deficient number, since it is larger than the sum of its proper divisors (6776395178).

13521650566 is a wasteful number, since it uses less digits than its factorization.

13521650566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189966.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 13521650566 in words is "thirteen billion, five hundred twenty-one million, six hundred fifty thousand, five hundred sixty-six".