13166215256206 has 4 divisors (see below), whose sum is σ = 19749322884312. Its totient is φ = 6583107628102.

The previous prime is 13166215256189. The next prime is 13166215256209. The reversal of 13166215256206 is 60265251266131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13166215256209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3291553814050 + ... + 3291553814053.

It is an arithmetic number, because the mean of its divisors is an integer number (4937330721078).

Almost surely, 2^{13166215256206} is an apocalyptic number.

13166215256206 is a deficient number, since it is larger than the sum of its proper divisors (6583107628106).

13166215256206 is an equidigital number, since it uses as much as digits as its factorization.

13166215256206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6583107628105.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 13166215256206 in words is "thirteen trillion, one hundred sixty-six billion, two hundred fifteen million, two hundred fifty-six thousand, two hundred six".