13204391566 has 8 divisors (see below), whose sum is σ = 20085553584. Its totient is φ = 6509207040.

The previous prime is 13204391533. The next prime is 13204391569. The reversal of 13204391566 is 66519340231.

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 (13204391569) 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, 46494195 + ... + 46494478.

It is an arithmetic number, because the mean of its divisors is an integer number (2510694198).

Almost surely, 2^13204391566 is an apocalyptic number.

13204391566 is a deficient number, since it is larger than the sum of its proper divisors (6881162018).

13204391566 is an equidigital number, since it uses as much as digits as its factorization.

13204391566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92988746.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 13204391566 in words is "thirteen billion, two hundred four million, three hundred ninety-one thousand, five hundred sixty-six".