18088686720 has 768 divisors, whose sum is σ = 72978796800. Its totient is φ = 4248059904.

The previous prime is 18088686709. The next prime is 18088686727. The reversal of 18088686720 is 2768688081.

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

It is not an unprimeable number, because it can be changed into a prime (18088686727) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46500286 + ... + 46500674.

It is an arithmetic number, because the mean of its divisors is an integer number (95024475).

Almost surely, 2^18088686720 is an apocalyptic number.

18088686720 is a gapful number since it is divisible by the number (10) 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 18088686720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36489398400).

18088686720 is an abundant number, since it is smaller than the sum of its proper divisors (54890110080).

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

18088686720 is a wasteful number, since it uses less digits than its factorization.

18088686720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 18088686720 in words is "eighteen billion, eighty-eight million, six hundred eighty-six thousand, seven hundred twenty".