18104690688 has 384 divisors, whose sum is σ = 57456322560. Its totient is φ = 4963368960.

The previous prime is 18104690677. The next prime is 18104690689. The reversal of 18104690688 is 88609640181.

It is a tau number, because it is divible by the number of its divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 18104690688.

It is not an unprimeable number, because it can be changed into a prime (18104690689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175773645 + ... + 175773747.

It is an arithmetic number, because the mean of its divisors is an integer number (149625840).

Almost surely, 2^18104690688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18104690688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28728161280).

18104690688 is an abundant number, since it is smaller than the sum of its proper divisors (39351631872).

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

18104690688 is a wasteful number, since it uses less digits than its factorization.

18104690688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 18104690688 in words is "eighteen billion, one hundred four million, six hundred ninety thousand, six hundred eighty-eight".