12820641169 has 8 divisors (see below), whose sum is σ = 14706230528. Its totient is φ = 10948569120.

The previous prime is 12820641167. The next prime is 12820641173. The reversal of 12820641169 is 96114602821.

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

It is a cyclic number.

It is not a de Polignac number, because 12820641169 - 2¹ = 12820641167 is a prime.

It is a super-2 number, since 2×12820641169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12820641161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377292 + ... + 3381085.

It is an arithmetic number, because the mean of its divisors is an integer number (1838278816).

Almost surely, 2^12820641169 is an apocalyptic number.

It is an amenable number.

12820641169 is a deficient number, since it is larger than the sum of its proper divisors (1885589359).

12820641169 is an equidigital number, since it uses as much as digits as its factorization.

12820641169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758655.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 12820641169 in words is "twelve billion, eight hundred twenty million, six hundred forty-one thousand, one hundred sixty-nine".