220953220605 has 128 divisors (see below), whose sum is σ = 435491965440. Its totient is φ = 105584394240.

The previous prime is 220953220583. The next prime is 220953220637. The reversal of 220953220605 is 506022359022.

It is a happy number.

220953220605 is a `hidden beast` number, since 2 + 20 + 9 + 5 + 3 + 2 + 20 + 605 = 666.

It is not a de Polignac number, because 220953220605 - 2¹⁸ = 220952958461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220953220605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28762365 + ... + 28770045.

It is an arithmetic number, because the mean of its divisors is an integer number (3402280980).

Almost surely, 2^220953220605 is an apocalyptic number.

It is an amenable number.

220953220605 is a deficient number, since it is larger than the sum of its proper divisors (214538744835).

220953220605 is a wasteful number, since it uses less digits than its factorization.

220953220605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8188 (or 8182 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 220953220605 its reverse (506022359022), we get a palindrome (726975579627).

The spelling of 220953220605 in words is "two hundred twenty billion, nine hundred fifty-three million, two hundred twenty thousand, six hundred five".