220420515255 has 16 divisors (see below), whose sum is σ = 352713017184. Its totient is φ = 117544210560.

The previous prime is 220420515247. The next prime is 220420515311. The reversal of 220420515255 is 552515024022.

It is a happy number.

220420515255 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 220420515255 - 2³ = 220420515247 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 700624 + ... + 965253.

It is an arithmetic number, because the mean of its divisors is an integer number (22044563574).

Almost surely, 2^220420515255 is an apocalyptic number.

220420515255 is a deficient number, since it is larger than the sum of its proper divisors (132292501929).

220420515255 is a wasteful number, since it uses less digits than its factorization.

220420515255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674706.

The product of its (nonzero) digits is 40000, while the sum is 33.

Adding to 220420515255 its reverse (552515024022), we get a palindrome (772935539277).

The spelling of 220420515255 in words is "two hundred twenty billion, four hundred twenty million, five hundred fifteen thousand, two hundred fifty-five".