18724942729089 has 72 divisors (see below), whose sum is σ = 29983989889152. Its totient is φ = 11237172249600.

The previous prime is 18724942729039. The next prime is 18724942729091. The reversal of 18724942729089 is 98092724942781.

18724942729089 is a `hidden beast` number, since 1 + 8 + 72 + 49 + 427 + 2 + 90 + 8 + 9 = 666.

It is not a de Polignac number, because 18724942729089 - 2¹¹ = 18724942727041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18724942729039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10454049 + ... + 12113505.

It is an arithmetic number, because the mean of its divisors is an integer number (416444304016).

Almost surely, 2^{18724942729089} is an apocalyptic number.

18724942729089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18724942729089 is a deficient number, since it is larger than the sum of its proper divisors (11259047160063).

18724942729089 is a wasteful number, since it uses less digits than its factorization.

18724942729089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659675 (or 1659653 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 72.

The spelling of 18724942729089 in words is "eighteen trillion, seven hundred twenty-four billion, nine hundred forty-two million, seven hundred twenty-nine thousand, eighty-nine".