220244862818 has 18 divisors (see below), whose sum is σ = 342181999809. Its totient is φ = 106315814472.

The previous prime is 220244862809. The next prime is 220244862829. The reversal of 220244862818 is 818268442022.

It can be written as a sum of positive squares in 2 ways, for example, as 220113920569 + 130942249 = 469163^2 + 11443^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331847.

It is a super-2 number, since 2×220244862818² (a number of 23 digits) contains 22 as substring.

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, 19241405 + ... + 19252847.

Almost surely, 2^220244862818 is an apocalyptic number.

220244862818 is a deficient number, since it is larger than the sum of its proper divisors (121937136991).

220244862818 is an frugal number, since it uses more digits than its factorization.

220244862818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22946 (or 11474 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 47.

The spelling of 220244862818 in words is "two hundred twenty billion, two hundred forty-four million, eight hundred sixty-two thousand, eight hundred eighteen".