12988862856 has 96 divisors (see below), whose sum is σ = 36346302720. Its totient is φ = 4186108800.

The previous prime is 12988862849. The next prime is 12988862879. The reversal of 12988862856 is 65826888921.

It is a junction number, because it is equal to n+sod(n) for n = 12988862793 and 12988862802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3397426 + ... + 3401246.

It is an arithmetic number, because the mean of its divisors is an integer number (378607320).

Almost surely, 2^12988862856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12988862856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18173151360).

12988862856 is an abundant number, since it is smaller than the sum of its proper divisors (23357439864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12988862856 is a wasteful number, since it uses less digits than its factorization.

12988862856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387 (or 5380 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 63.

The spelling of 12988862856 in words is "twelve billion, nine hundred eighty-eight million, eight hundred sixty-two thousand, eight hundred fifty-six".