12287999999 has 6 divisors (see below), whose sum is σ = 13506644760. Its totient is φ = 11170908980.

The previous prime is 12287999957. The next prime is 12288000077. The reversal of 12287999999 is 99999978221.

It is a happy number.

It is not a de Polignac number, because 12287999999 - 2²⁴ = 12271222783 is a prime.

It is a Duffinian number.

12287999999 is a modest number, since divided by 999999 gives 12287 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287999939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50776739 + ... + 50776980.

It is an arithmetic number, because the mean of its divisors is an integer number (2251107460).

Almost surely, 2^12287999999 is an apocalyptic number.

12287999999 is a deficient number, since it is larger than the sum of its proper divisors (1218644761).

12287999999 is a wasteful number, since it uses less digits than its factorization.

12287999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101553741 (or 101553730 counting only the distinct ones).

The product of its digits is 119042784, while the sum is 74.

The spelling of 12287999999 in words is "twelve billion, two hundred eighty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".