220391709288 has 128 divisors (see below), whose sum is σ = 573358694400. Its totient is φ = 70550528256.

The previous prime is 220391709259. The next prime is 220391709311. The reversal of 220391709288 is 882907193022.

It is a self number, because there is not a number n which added to its sum of digits gives 220391709288.

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, 14517670 + ... + 14532842.

It is an arithmetic number, because the mean of its divisors is an integer number (4479364800).

Almost surely, 2^220391709288 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 220391709288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286679347200).

220391709288 is an abundant number, since it is smaller than the sum of its proper divisors (352966985112).

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

220391709288 is a wasteful number, since it uses less digits than its factorization.

220391709288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15471 (or 15467 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 220391709288 in words is "two hundred twenty billion, three hundred ninety-one million, seven hundred nine thousand, two hundred eighty-eight".