220538288730 has 32 divisors (see below), whose sum is σ = 543597081984. Its totient is φ = 57220744896.

The previous prime is 220538288701. The next prime is 220538288797. The reversal of 220538288730 is 37882835022.

It is a self number, because there is not a number n which added to its sum of digits gives 220538288730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99340462 + ... + 99342681.

It is an arithmetic number, because the mean of its divisors is an integer number (16987408812).

Almost surely, 2^220538288730 is an apocalyptic number.

220538288730 is an abundant number, since it is smaller than the sum of its proper divisors (323058793254).

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

220538288730 is a wasteful number, since it uses less digits than its factorization.

220538288730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198683190.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 220538288730 in words is "two hundred twenty billion, five hundred thirty-eight million, two hundred eighty-eight thousand, seven hundred thirty".