12816166089 has 4 divisors (see below), whose sum is σ = 17088221456. Its totient is φ = 8544110724.

The previous prime is 12816166061. The next prime is 12816166123. The reversal of 12816166089 is 98066161821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98066161821 = 3 ⋅32688720607.

It is not a de Polignac number, because 12816166089 - 2⁸ = 12816165833 is a prime.

It is a super-2 number, since 2×12816166089² (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 (12816166019) 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, 2136027679 + ... + 2136027684.

It is an arithmetic number, because the mean of its divisors is an integer number (4272055364).

Almost surely, 2^12816166089 is an apocalyptic number.

It is an amenable number.

12816166089 is a deficient number, since it is larger than the sum of its proper divisors (4272055367).

12816166089 is an equidigital number, since it uses as much as digits as its factorization.

12816166089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272055366.

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 12816166089 in words is "twelve billion, eight hundred sixteen million, one hundred sixty-six thousand, eighty-nine".