12018999965 has 32 divisors (see below), whose sum is σ = 16649846784. Its totient is φ = 8158570560.

The previous prime is 12018999943. The next prime is 12018999977. The reversal of 12018999965 is 56999981021.

12018999965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12018999965 - 2⁶ = 12018999901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2179742 + ... + 2185248.

It is an arithmetic number, because the mean of its divisors is an integer number (520307712).

Almost surely, 2^12018999965 is an apocalyptic number.

It is an amenable number.

12018999965 is a deficient number, since it is larger than the sum of its proper divisors (4630846819).

12018999965 is a wasteful number, since it uses less digits than its factorization.

12018999965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6137.

The product of its (nonzero) digits is 3149280, while the sum is 59.

The spelling of 12018999965 in words is "twelve billion, eighteen million, nine hundred ninety-nine thousand, nine hundred sixty-five".