220244266781 has 16 divisors (see below), whose sum is σ = 284058887040. Its totient is φ = 165701014080.

The previous prime is 220244266757. The next prime is 220244266783. The reversal of 220244266781 is 187662442022.

It is not a de Polignac number, because 220244266781 - 2³⁴ = 203064397597 is a prime.

It is a super-2 number, since 2×220244266781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220244266783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49313546 + ... + 49318011.

It is an arithmetic number, because the mean of its divisors is an integer number (17753680440).

Almost surely, 2^220244266781 is an apocalyptic number.

It is an amenable number.

220244266781 is a deficient number, since it is larger than the sum of its proper divisors (63814620259).

220244266781 is a wasteful number, since it uses less digits than its factorization.

220244266781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98631604.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 220244266781 in words is "two hundred twenty billion, two hundred forty-four million, two hundred sixty-six thousand, seven hundred eighty-one".