220263446642 has 18 divisors (see below), whose sum is σ = 331856133447. Its totient is φ = 109646874400.

The previous prime is 220263446629. The next prime is 220263446647. The reversal of 220263446642 is 246644362022.

220263446642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 217492582321 + 2770864321 = 466361^2 + 52639^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331861.

It is a super-2 number, since 2×220263446642² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220263446642.

It is not an unprimeable number, because it can be changed into a prime (220263446647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 186505292 + ... + 186506472.

Almost surely, 2^220263446642 is an apocalyptic number.

220263446642 is a deficient number, since it is larger than the sum of its proper divisors (111592686805).

220263446642 is an frugal number, since it uses more digits than its factorization.

220263446642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 41.

The spelling of 220263446642 in words is "two hundred twenty billion, two hundred sixty-three million, four hundred forty-six thousand, six hundred forty-two".