12887867600 has 30 divisors (see below), whose sum is σ = 30963102870. Its totient is φ = 5155146880.

The previous prime is 12887867581. The next prime is 12887867617. The reversal of 12887867600 is 676878821.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 346555456 + 12541312144 = 18616^2 + 111988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16109435 + ... + 16110234.

It is an arithmetic number, because the mean of its divisors is an integer number (1032103429).

Almost surely, 2^12887867600 is an apocalyptic number.

12887867600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12887867600 is an abundant number, since it is smaller than the sum of its proper divisors (18075235270).

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

12887867600 is a wasteful number, since it uses less digits than its factorization.

12887867600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32219687 (or 32219676 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 12887867600 in words is "twelve billion, eight hundred eighty-seven million, eight hundred sixty-seven thousand, six hundred".