18030055680 has 1296 divisors, whose sum is σ = 81692956800. Its totient is φ = 3804143616.

The previous prime is 18030055679. The next prime is 18030055727. The reversal of 18030055680 is 8655003081.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1386927354 + ... + 1386927366.

Almost surely, 2^18030055680 is an apocalyptic number.

18030055680 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 18030055680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40846478400).

18030055680 is an abundant number, since it is smaller than the sum of its proper divisors (63662901120).

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

18030055680 is an frugal number, since it uses more digits than its factorization.

18030055680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 18030055680 in words is "eighteen billion, thirty million, fifty-five thousand, six hundred eighty".