12081035681 has 8 divisors (see below), whose sum is σ = 14193105024. Its totient is φ = 10137931920.

The previous prime is 12081035651. The next prime is 12081035689. The reversal of 12081035681 is 18653018021.

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 12081035681 - 2¹⁰ = 12081034657 is a prime.

It is a super-2 number, since 2×12081035681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12081035689) 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, 42241241 + ... + 42241526.

It is an arithmetic number, because the mean of its divisors is an integer number (1774138128).

Almost surely, 2^12081035681 is an apocalyptic number.

12081035681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12081035681 is a deficient number, since it is larger than the sum of its proper divisors (2112069343).

12081035681 is a wasteful number, since it uses less digits than its factorization.

12081035681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84482791.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 12081035681 in words is "twelve billion, eighty-one million, thirty-five thousand, six hundred eighty-one".