220506948865 has 16 divisors (see below), whose sum is σ = 309785374080. Its totient is φ = 147516842880.

The previous prime is 220506948829. The next prime is 220506948899. The reversal of 220506948865 is 568849605022.

It is not a de Polignac number, because 220506948865 - 2⁷ = 220506948737 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 76830255 + ... + 76833124.

It is an arithmetic number, because the mean of its divisors is an integer number (19361585880).

Almost surely, 2^220506948865 is an apocalyptic number.

It is an amenable number.

220506948865 is a deficient number, since it is larger than the sum of its proper divisors (89278425215).

220506948865 is a wasteful number, since it uses less digits than its factorization.

220506948865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153663432.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 220506948865 in words is "two hundred twenty billion, five hundred six million, nine hundred forty-eight thousand, eight hundred sixty-five".