12776556571 has 16 divisors (see below), whose sum is σ = 13285411776. Its totient is φ = 12277440000.

The previous prime is 12776556553. The next prime is 12776556577. The reversal of 12776556571 is 17565567721.

12776556571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12776556571 - 2¹¹ = 12776554523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12776556577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5066791 + ... + 5069311.

It is an arithmetic number, because the mean of its divisors is an integer number (830338236).

Almost surely, 2^12776556571 is an apocalyptic number.

12776556571 is a deficient number, since it is larger than the sum of its proper divisors (508855205).

12776556571 is a wasteful number, since it uses less digits than its factorization.

12776556571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374.

The product of its digits is 3087000, while the sum is 52.

The spelling of 12776556571 in words is "twelve billion, seven hundred seventy-six million, five hundred fifty-six thousand, five hundred seventy-one".