220545844817796 has 135 divisors (see below), whose sum is σ = 566609025797815. Its totient is φ = 72332238291600.

The previous prime is 220545844817717. The next prime is 220545844817813. The reversal of 220545844817796 is 697718448545022.

The square root of 220545844817796 is 14850786.

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

220545844817796 is a `hidden beast` number, since 2 + 2 + 0 + 5 + 4 + 5 + 8 + 448 + 177 + 9 + 6 = 666.

220545844817796 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 449176873111 + ... + 449176873601.

Almost surely, 2^{220545844817796} is an apocalyptic number.

220545844817796 is the 14850786-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220545844817796

220545844817796 is an abundant number, since it is smaller than the sum of its proper divisors (346063180980019).

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

220545844817796 is an frugal number, since it uses more digits than its factorization.

220545844817796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1083801600, while the sum is 72.

The spelling of 220545844817796 in words is "two hundred twenty trillion, five hundred forty-five billion, eight hundred forty-four million, eight hundred seventeen thousand, seven hundred ninety-six".