18709689360544 has 384 divisors, whose sum is σ = 46306862784000. Its totient is φ = 7244761595904.

The previous prime is 18709689360533. The next prime is 18709689360569. The reversal of 18709689360544 is 44506398690781.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24715573414 + ... + 24715574170.

It is an arithmetic number, because the mean of its divisors is an integer number (120590788500).

Almost surely, 2^{18709689360544} is an apocalyptic number.

18709689360544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18709689360544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23153431392000).

18709689360544 is an abundant number, since it is smaller than the sum of its proper divisors (27597173423456).

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

18709689360544 is a wasteful number, since it uses less digits than its factorization.

18709689360544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 18709689360544 in words is "eighteen trillion, seven hundred nine billion, six hundred eighty-nine million, three hundred sixty thousand, five hundred forty-four".