12887251990 has 8 divisors (see below), whose sum is σ = 23197053600. Its totient is φ = 5154900792.

The previous prime is 12887251987. The next prime is 12887252003. The reversal of 12887251990 is 9915278821.

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

It is a congruent 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, 644362590 + ... + 644362609.

It is an arithmetic number, because the mean of its divisors is an integer number (2899631700).

Almost surely, 2^12887251990 is an apocalyptic number.

12887251990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12887251990 is a deficient number, since it is larger than the sum of its proper divisors (10309801610).

12887251990 is a wasteful number, since it uses less digits than its factorization.

12887251990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288725206.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 12887251990 in words is "twelve billion, eight hundred eighty-seven million, two hundred fifty-one thousand, nine hundred ninety".