12908012387 has 6 divisors (see below), whose sum is σ = 13623138108. Its totient is φ = 12228642972.

The previous prime is 12908012269. The next prime is 12908012431. The reversal of 12908012387 is 78321080921.

It is a de Polignac number, because none of the positive numbers 2^k-12908012387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12908012087) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 17877773 + ... + 17878494.

It is an arithmetic number, because the mean of its divisors is an integer number (2270523018).

Almost surely, 2^12908012387 is an apocalyptic number.

12908012387 is a deficient number, since it is larger than the sum of its proper divisors (715125721).

12908012387 is an equidigital number, since it uses as much as digits as its factorization.

12908012387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35756305 (or 35756286 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 12908012387 in words is "twelve billion, nine hundred eight million, twelve thousand, three hundred eighty-seven".