12876871845 has 24 divisors (see below), whose sum is σ = 21117804768. Its totient is φ = 6700147840.

The previous prime is 12876871841. The next prime is 12876871871. The reversal of 12876871845 is 54817867821.

It is not a de Polignac number, because 12876871845 - 2² = 12876871841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12876871841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230127 + ... + 280556.

It is an arithmetic number, because the mean of its divisors is an integer number (879908532).

Almost surely, 2^12876871845 is an apocalyptic number.

12876871845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12876871845 is a deficient number, since it is larger than the sum of its proper divisors (8240932923).

12876871845 is an equidigital number, since it uses as much as digits as its factorization.

12876871845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510773 (or 510732 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 57.

The spelling of 12876871845 in words is "twelve billion, eight hundred seventy-six million, eight hundred seventy-one thousand, eight hundred forty-five".