12766396077 has 48 divisors (see below), whose sum is σ = 20358898560. Its totient is φ = 7672807296.

The previous prime is 12766396073. The next prime is 12766396133. The reversal of 12766396077 is 77069366721.

12766396077 is a `hidden beast` number, since 1 + 27 + 6 + 6 + 3 + 9 + 607 + 7 = 666.

It is not a de Polignac number, because 12766396077 - 2² = 12766396073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12766396073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 766563 + ... + 783039.

It is an arithmetic number, because the mean of its divisors is an integer number (424143720).

Almost surely, 2^12766396077 is an apocalyptic number.

It is an amenable number.

12766396077 is a deficient number, since it is larger than the sum of its proper divisors (7592502483).

12766396077 is a wasteful number, since it uses less digits than its factorization.

12766396077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16722 (or 16719 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 54.

The spelling of 12766396077 in words is "twelve billion, seven hundred sixty-six million, three hundred ninety-six thousand, seventy-seven".