12487000891 has 2 divisors, whose sum is σ = 12487000892. Its totient is φ = 12487000890.

The previous prime is 12487000861. The next prime is 12487000927. The reversal of 12487000891 is 19800078421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12487000891 - 2⁵ = 12487000859 is a prime.

It is not a weakly prime, because it can be changed into another prime (12487000831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6243500445 + 6243500446.

It is an arithmetic number, because the mean of its divisors is an integer number (6243500446).

Almost surely, 2^12487000891 is an apocalyptic number.

12487000891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12487000891 is an equidigital number, since it uses as much as digits as its factorization.

12487000891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 12487000891 in words is "twelve billion, four hundred eighty-seven million, eight hundred ninety-one", and thus it is an aban number.