12887903778 has 8 divisors (see below), whose sum is σ = 25775807568. Its totient is φ = 4295967924.

The previous prime is 12887903753. The next prime is 12887903801. The reversal of 12887903778 is 87730978821.

It is a sphenic number, since it is the product of 3 distinct primes.

12887903778 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073991976 + ... + 1073991987.

It is an arithmetic number, because the mean of its divisors is an integer number (3221975946).

Almost surely, 2^12887903778 is an apocalyptic number.

12887903778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12887903778 is a wasteful number, since it uses less digits than its factorization.

12887903778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147983968.

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 12887903778 in words is "twelve billion, eight hundred eighty-seven million, nine hundred three thousand, seven hundred seventy-eight".