220686989760 has 168 divisors, whose sum is σ = 759627741600. Its totient is φ = 58806724608.

The previous prime is 220686989741. The next prime is 220686989821. The reversal of 220686989760 is 67989686022.

It is a super-3 number, since 3×220686989760³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4001734 + ... + 4056506.

It is an arithmetic number, because the mean of its divisors is an integer number (4521593700).

Almost surely, 2^220686989760 is an apocalyptic number.

220686989760 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 220686989760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379813870800).

220686989760 is an abundant number, since it is smaller than the sum of its proper divisors (538940751840).

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

220686989760 is a wasteful number, since it uses less digits than its factorization.

220686989760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56195 (or 56182 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 220686989760 in words is "two hundred twenty billion, six hundred eighty-six million, nine hundred eighty-nine thousand, seven hundred sixty".