12987009290 has 8 divisors (see below), whose sum is σ = 23376616740. Its totient is φ = 5194803712.

The previous prime is 12987009281. The next prime is 12987009293. The reversal of 12987009290 is 9290078921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12688445449 + 298563841 = 112643^2 + 17279^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12987009293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649350455 + ... + 649350474.

Almost surely, 2^12987009290 is an apocalyptic number.

12987009290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12987009290 is a deficient number, since it is larger than the sum of its proper divisors (10389607450).

12987009290 is a wasteful number, since it uses less digits than its factorization.

12987009290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298700936.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 12987009290 in words is "twelve billion, nine hundred eighty-seven million, nine thousand, two hundred ninety".