18016560240 has 160 divisors (see below), whose sum is σ = 63886910976. Its totient is φ = 4114406400.

The previous prime is 18016560227. The next prime is 18016560251. The reversal of 18016560240 is 4206561081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2181559 + ... + 2189801.

Almost surely, 2^18016560240 is an apocalyptic number.

18016560240 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 18016560240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31943455488).

18016560240 is an abundant number, since it is smaller than the sum of its proper divisors (45870350736).

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

18016560240 is a wasteful number, since it uses less digits than its factorization.

18016560240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9567 (or 9561 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 18016560240 in words is "eighteen billion, sixteen million, five hundred sixty thousand, two hundred forty".