18144249624 has 24 divisors (see below), whose sum is σ = 49140676260. Its totient is φ = 6048083184.

The previous prime is 18144249623. The next prime is 18144249631. The reversal of 18144249624 is 42694244181.

18144249624 is a `hidden beast` number, since 1 + 8 + 14 + 4 + 2 + 4 + 9 + 624 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18144249624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18144249623) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 126001662 + ... + 126001805.

Almost surely, 2^18144249624 is an apocalyptic number.

It is an amenable number.

18144249624 is an abundant number, since it is smaller than the sum of its proper divisors (30996426636).

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

18144249624 is a wasteful number, since it uses less digits than its factorization.

18144249624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252003479 (or 252003472 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The spelling of 18144249624 in words is "eighteen billion, one hundred forty-four million, two hundred forty-nine thousand, six hundred twenty-four".