220505216835 has 16 divisors (see below), whose sum is σ = 362343708576. Its totient is φ = 114424328448.

The previous prime is 220505216807. The next prime is 220505216837. The reversal of 220505216835 is 538612505022.

220505216835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220505216835 - 2⁷ = 220505216707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220505216793 and 220505216802.

It is not an unprimeable number, because it can be changed into a prime (220505216837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 198652794 + ... + 198653903.

It is an arithmetic number, because the mean of its divisors is an integer number (22646481786).

Almost surely, 2^220505216835 is an apocalyptic number.

220505216835 is a deficient number, since it is larger than the sum of its proper divisors (141838491741).

220505216835 is a wasteful number, since it uses less digits than its factorization.

220505216835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397306742.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 220505216835 in words is "two hundred twenty billion, five hundred five million, two hundred sixteen thousand, eight hundred thirty-five".