660118018560 has 1280 divisors, whose sum is σ = 3000695943168. Its totient is φ = 119144448000.

The previous prime is 660118018531. The next prime is 660118018579. The reversal of 660118018560 is 65810811066.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 130688035 + ... + 130693085.

Almost surely, 2^660118018560 is an apocalyptic number.

660118018560 is a gapful number since it is divisible by the number (60) 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 660118018560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500347971584).

660118018560 is an abundant number, since it is smaller than the sum of its proper divisors (2340577924608).

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

660118018560 is a wasteful number, since it uses less digits than its factorization.

660118018560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 660118018560 in words is "six hundred sixty billion, one hundred eighteen million, eighteen thousand, five hundred sixty".