12018697984 has 36 divisors (see below), whose sum is σ = 24348549064. Its totient is φ = 5919648768.

The previous prime is 12018697981. The next prime is 12018697987. The reversal of 12018697984 is 48979681021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12018697981) and next prime (12018697987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018697981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333207 + ... + 367510.

Almost surely, 2^12018697984 is an apocalyptic number.

It is an amenable number.

12018697984 is an abundant number, since it is smaller than the sum of its proper divisors (12329851080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12018697984 is an frugal number, since it uses more digits than its factorization.

12018697984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700800 (or 700786 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 12018697984 in words is "twelve billion, eighteen million, six hundred ninety-seven thousand, nine hundred eighty-four".