12811178766 has 16 divisors (see below), whose sum is σ = 25623806544. Its totient is φ = 4270151424.

The previous prime is 12811178747. The next prime is 12811178791. The reversal of 12811178766 is 66787111821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79486 + ... + 178718.

It is an arithmetic number, because the mean of its divisors is an integer number (1601487909).

Almost surely, 2^12811178766 is an apocalyptic number.

12811178766 is an abundant number, since it is smaller than the sum of its proper divisors (12812627778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12811178766 is a wasteful number, since it uses less digits than its factorization.

12811178766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120755.

The product of its digits is 225792, while the sum is 48.

The spelling of 12811178766 in words is "twelve billion, eight hundred eleven million, one hundred seventy-eight thousand, seven hundred sixty-six".