220611764568 has 256 divisors, whose sum is σ = 611275392000. Its totient is φ = 65937991680.

The previous prime is 220611764531. The next prime is 220611764623. The reversal of 220611764568 is 865467116022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 752941030 + ... + 752941322.

It is an arithmetic number, because the mean of its divisors is an integer number (2387794500).

Almost surely, 2^220611764568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220611764568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305637696000).

220611764568 is an abundant number, since it is smaller than the sum of its proper divisors (390663627432).

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

220611764568 is a wasteful number, since it uses less digits than its factorization.

220611764568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 220611764568 in words is "two hundred twenty billion, six hundred eleven million, seven hundred sixty-four thousand, five hundred sixty-eight".