220641748824 has 128 divisors (see below), whose sum is σ = 637117655040. Its totient is φ = 62371233792.

The previous prime is 220641748813. The next prime is 220641748849. The reversal of 220641748824 is 428847146022.

It is a super-2 number, since 2×220641748824² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10943697 + ... + 10963839.

It is an arithmetic number, because the mean of its divisors is an integer number (4977481680).

Almost surely, 2^220641748824 is an apocalyptic number.

220641748824 is a gapful number since it is divisible by the number (24) 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 220641748824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318558827520).

220641748824 is an abundant number, since it is smaller than the sum of its proper divisors (416475906216).

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

220641748824 is a wasteful number, since it uses less digits than its factorization.

220641748824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20849 (or 20845 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 48.

The spelling of 220641748824 in words is "two hundred twenty billion, six hundred forty-one million, seven hundred forty-eight thousand, eight hundred twenty-four".