220551596168 has 36 divisors (see below), whose sum is σ = 439335682485. Its totient is φ = 103778359936.

The previous prime is 220551596149. The next prime is 220551596183. The reversal of 220551596168 is 861695155022.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 201854315524 + 18697280644 = 449282^2 + 136738^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332078.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22576421 + ... + 22586187.

Almost surely, 2^220551596168 is an apocalyptic number.

It is an amenable number.

220551596168 is a deficient number, since it is larger than the sum of its proper divisors (218784086317).

220551596168 is an frugal number, since it uses more digits than its factorization.

220551596168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19574 (or 9786 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 50.

Multiplying 220551596168 by its sum of digits (50), we get a square (11027579808400 = 3320780²).

The spelling of 220551596168 in words is "two hundred twenty billion, five hundred fifty-one million, five hundred ninety-six thousand, one hundred sixty-eight".