18109045008684 has 768 divisors, whose sum is σ = 59673600000000. Its totient is φ = 4731056128512.

The previous prime is 18109045008673. The next prime is 18109045008709. The reversal of 18109045008684 is 48680054090181.

It is a happy number.

18109045008684 is a `hidden beast` number, since 1 + 8 + 109 + 0 + 450 + 0 + 8 + 6 + 84 = 666.

It is a super-2 number, since 2×18109045008684² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18109045008684.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2414857567 + ... + 2414865065.

It is an arithmetic number, because the mean of its divisors is an integer number (77700000000).

Almost surely, 2^{18109045008684} is an apocalyptic number.

18109045008684 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 18109045008684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29836800000000).

18109045008684 is an abundant number, since it is smaller than the sum of its proper divisors (41564554991316).

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

18109045008684 is a wasteful number, since it uses less digits than its factorization.

18109045008684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672 (or 7650 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 18109045008684 in words is "eighteen trillion, one hundred nine billion, forty-five million, eight thousand, six hundred eighty-four".