12811806927 has 24 divisors (see below), whose sum is σ = 18604045824. Its totient is φ = 8495991504.

The previous prime is 12811806923. The next prime is 12811806929. The reversal of 12811806927 is 72960811821.

It is not a de Polignac number, because 12811806927 - 2² = 12811806923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811806923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4018428 + ... + 4021614.

It is an arithmetic number, because the mean of its divisors is an integer number (775168576).

Almost surely, 2^12811806927 is an apocalyptic number.

12811806927 is a deficient number, since it is larger than the sum of its proper divisors (5792238897).

12811806927 is a wasteful number, since it uses less digits than its factorization.

12811806927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5416 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 12811806927 in words is "twelve billion, eight hundred eleven million, eight hundred six thousand, nine hundred twenty-seven".