12966081281 has 8 divisors (see below), whose sum is σ = 13011130464. Its totient is φ = 12921068160.

The previous prime is 12966081259. The next prime is 12966081287. The reversal of 12966081281 is 18218066921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12966081281 is a prime.

It is a super-2 number, since 2×12966081281² (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 (12966081287) 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, 850730 + ... + 865836.

It is an arithmetic number, because the mean of its divisors is an integer number (1626391308).

Almost surely, 2^12966081281 is an apocalyptic number.

It is an amenable number.

12966081281 is a deficient number, since it is larger than the sum of its proper divisors (45049183).

12966081281 is a wasteful number, since it uses less digits than its factorization.

12966081281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 12966081281 in words is "twelve billion, nine hundred sixty-six million, eighty-one thousand, two hundred eighty-one".