220660702728840 has 768 divisors, whose sum is σ = 813503233670400. Its totient is φ = 51405948518400.

The previous prime is 220660702728839. The next prime is 220660702728863. The reversal of 220660702728840 is 48827207066022.

220660702728840 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 607 + 0 + 2 + 7 + 28 + 8 + 4 + 0 = 666.

It is a super-4 number, since 4×220660702728840⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4541347266 + ... + 4541395854.

It is an arithmetic number, because the mean of its divisors is an integer number (1059249002175).

Almost surely, 2^{220660702728840} is an apocalyptic number.

220660702728840 is a gapful number since it is divisible by the number (20) 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 220660702728840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406751616835200).

220660702728840 is an abundant number, since it is smaller than the sum of its proper divisors (592842530941560).

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

220660702728840 is a wasteful number, since it uses less digits than its factorization.

220660702728840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49078 (or 49071 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 220660702728840 in words is "two hundred twenty trillion, six hundred sixty billion, seven hundred two million, seven hundred twenty-eight thousand, eight hundred forty".