220888915830 has 288 divisors, whose sum is σ = 645859678464. Its totient is φ = 52324272000.

The previous prime is 220888915817. The next prime is 220888915879. The reversal of 220888915830 is 38519888022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 95580375 + ... + 95582685.

It is an arithmetic number, because the mean of its divisors is an integer number (2242568328).

Almost surely, 2^220888915830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220888915830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322929839232).

220888915830 is an abundant number, since it is smaller than the sum of its proper divisors (424970762634).

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

220888915830 is a wasteful number, since it uses less digits than its factorization.

220888915830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 220888915830 in words is "two hundred twenty billion, eight hundred eighty-eight million, nine hundred fifteen thousand, eight hundred thirty".