12776286885 has 16 divisors (see below), whose sum is σ = 20461758720. Its totient is φ = 6807453120.

The previous prime is 12776286881. The next prime is 12776286889. The reversal of 12776286885 is 58868267721.

It is an interprime number because it is at equal distance from previous prime (12776286881) and next prime (12776286889).

It is not a de Polignac number, because 12776286885 - 2² = 12776286881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776286881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394306 + ... + 425475.

It is an arithmetic number, because the mean of its divisors is an integer number (1278859920).

Almost surely, 2^12776286885 is an apocalyptic number.

12776286885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12776286885 is a deficient number, since it is larger than the sum of its proper divisors (7685471835).

12776286885 is a wasteful number, since it uses less digits than its factorization.

12776286885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820828.

The product of its digits is 18063360, while the sum is 60.

The spelling of 12776286885 in words is "twelve billion, seven hundred seventy-six million, two hundred eighty-six thousand, eight hundred eighty-five".