2220161054256 has 60 divisors (see below), whose sum is σ = 6364912958040. Its totient is φ = 722003592960.

The previous prime is 2220161054249. The next prime is 2220161054269. The reversal of 2220161054256 is 6524501610222.

2220161054256 is a `hidden beast` number, since 2 + 2 + 2 + 0 + 1 + 61 + 0 + 542 + 56 = 666.

It is a super-3 number, since 3×2220161054256³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2220161054256.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 188015866 + ... + 188027673.

It is an arithmetic number, because the mean of its divisors is an integer number (106081882634).

Almost surely, 2^{2220161054256} is an apocalyptic number.

It is an amenable number.

2220161054256 is an abundant number, since it is smaller than the sum of its proper divisors (4144751903784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220161054256 is a wasteful number, since it uses less digits than its factorization.

2220161054256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376043594 (or 376043585 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 2220161054256 its reverse (6524501610222), we get a palindrome (8744662664478).

The spelling of 2220161054256 in words is "two trillion, two hundred twenty billion, one hundred sixty-one million, fifty-four thousand, two hundred fifty-six".