12688981161 has 8 divisors (see below), whose sum is σ = 16937719104. Its totient is φ = 8449782000.

The previous prime is 12688981133. The next prime is 12688981171. The reversal of 12688981161 is 16118988621.

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

It is not a de Polignac number, because 12688981161 - 2¹⁰ = 12688980137 is a prime.

It is a super-2 number, since 2×12688981161² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12688981121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2381590 + ... + 2386911.

It is an arithmetic number, because the mean of its divisors is an integer number (2117214888).

Almost surely, 2^12688981161 is an apocalyptic number.

It is an amenable number.

12688981161 is a deficient number, since it is larger than the sum of its proper divisors (4248737943).

12688981161 is an equidigital number, since it uses as much as digits as its factorization.

12688981161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769391.

The product of its digits is 331776, while the sum is 51.

The spelling of 12688981161 in words is "twelve billion, six hundred eighty-eight million, nine hundred eighty-one thousand, one hundred sixty-one".