12776772085 has 64 divisors (see below), whose sum is σ = 19311851520. Its totient is φ = 7883377920.

The previous prime is 12776772077. The next prime is 12776772103. The reversal of 12776772085 is 58027767721.

It is not a de Polignac number, because 12776772085 - 2³ = 12776772077 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 27359022 + ... + 27359488.

It is an arithmetic number, because the mean of its divisors is an integer number (301747680).

Almost surely, 2^12776772085 is an apocalyptic number.

It is an amenable number.

12776772085 is a deficient number, since it is larger than the sum of its proper divisors (6535079435).

12776772085 is a wasteful number, since it uses less digits than its factorization.

12776772085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 2304960, while the sum is 52.

The spelling of 12776772085 in words is "twelve billion, seven hundred seventy-six million, seven hundred seventy-two thousand, eighty-five".