220338305944 has 32 divisors (see below), whose sum is σ = 419626612800. Its totient is φ = 108440434080.

The previous prime is 220338305911. The next prime is 220338305947. The reversal of 220338305944 is 449503833022.

It is a super-2 number, since 2×220338305944² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220338305944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220338305947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532767 + ... + 851185.

It is an arithmetic number, because the mean of its divisors is an integer number (13113331650).

Almost surely, 2^220338305944 is an apocalyptic number.

It is an amenable number.

220338305944 is a deficient number, since it is larger than the sum of its proper divisors (199288306856).

220338305944 is a wasteful number, since it uses less digits than its factorization.

220338305944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319783 (or 319779 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 220338305944 in words is "two hundred twenty billion, three hundred thirty-eight million, three hundred five thousand, nine hundred forty-four".