220692308841 has 9 divisors (see below), whose sum is σ = 318779815159. Its totient is φ = 147127266336.

The previous prime is 220692308821. The next prime is 220692308873. The reversal of 220692308841 is 148803296022.

The square root of 220692308841 is 469779.

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

It can be written as a sum of positive squares in only one way, i.e., 114484106025 + 106208202816 = 338355^2 + 325896^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 220692308841 - 2⁹ = 220692308329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220692308821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1331041 + ... + 1487633.

Almost surely, 2^220692308841 is an apocalyptic number.

220692308841 is the 469779-th square number.

220692308841 is the 234890-th centered octagonal number.

It is an amenable number.

220692308841 is a deficient number, since it is larger than the sum of its proper divisors (98087506318).

220692308841 is an frugal number, since it uses more digits than its factorization.

220692308841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313192 (or 156596 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 220692308841 in words is "two hundred twenty billion, six hundred ninety-two million, three hundred eight thousand, eight hundred forty-one".