12465776776 has 32 divisors (see below), whose sum is σ = 24036740280. Its totient is φ = 6057164800.

The previous prime is 12465776773. The next prime is 12465776801. The reversal of 12465776776 is 67767756421.

It can be written as a sum of positive squares in 4 ways, for example, as 12326772676 + 139004100 = 111026^2 + 11790^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12465776776.

It is not an unprimeable number, because it can be changed into a prime (12465776773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10356 + ... + 158236.

Almost surely, 2^12465776776 is an apocalyptic number.

It is an amenable number.

12465776776 is a deficient number, since it is larger than the sum of its proper divisors (11570963504).

12465776776 is a wasteful number, since it uses less digits than its factorization.

12465776776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148185 (or 148181 counting only the distinct ones).

The product of its digits is 20744640, while the sum is 58.

The spelling of 12465776776 in words is "twelve billion, four hundred sixty-five million, seven hundred seventy-six thousand, seven hundred seventy-six".