18068529720 has 64 divisors (see below), whose sum is σ = 54214686720. Its totient is φ = 4817465984.

The previous prime is 18068529719. The next prime is 18068529751. The reversal of 18068529720 is 2792586081.

It is a self number, because there is not a number n which added to its sum of digits gives 18068529720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146937 + ... + 1162583.

It is an arithmetic number, because the mean of its divisors is an integer number (847104480).

Almost surely, 2^18068529720 is an apocalyptic number.

18068529720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18068529720 is an abundant number, since it is smaller than the sum of its proper divisors (36146157000).

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

18068529720 is a wasteful number, since it uses less digits than its factorization.

18068529720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25284 (or 25280 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 18068529720 in words is "eighteen billion, sixty-eight million, five hundred twenty-nine thousand, seven hundred twenty".