220291299904 has 63 divisors (see below), whose sum is σ = 473458284603. Its totient is φ = 101650378752.

The previous prime is 220291299889. The next prime is 220291299923. The reversal of 220291299904 is 409992192022.

The square root of 220291299904 is 469352.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 184343139904 + 35948160000 = 429352^2 + 189600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48810352 + ... + 48814864.

Almost surely, 2^220291299904 is an apocalyptic number.

220291299904 is the 469352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220291299904

220291299904 is an abundant number, since it is smaller than the sum of its proper divisors (253166984699).

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

220291299904 is an frugal number, since it uses more digits than its factorization.

220291299904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

Multiplying 220291299904 by its sum of digits (49), we get a square (10794273695296 = 3285464²).

The spelling of 220291299904 in words is "two hundred twenty billion, two hundred ninety-one million, two hundred ninety-nine thousand, nine hundred four".