220556604707985 has 256 divisors, whose sum is σ = 440374910976000. Its totient is φ = 91782026035200.

The previous prime is 220556604707953. The next prime is 220556604708073. The reversal of 220556604707985 is 589707406655022.

It is not a de Polignac number, because 220556604707985 - 2⁵ = 220556604707953 is a prime.

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 255 ways as a sum of consecutive naturals, for example, 51423780721 + ... + 51423785009.

It is an arithmetic number, because the mean of its divisors is an integer number (1720214496000).

Almost surely, 2^{220556604707985} is an apocalyptic number.

It is an amenable number.

220556604707985 is a deficient number, since it is larger than the sum of its proper divisors (219818306268015).

220556604707985 is a wasteful number, since it uses less digits than its factorization.

220556604707985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its (nonzero) digits is 254016000, while the sum is 66.

The spelling of 220556604707985 in words is "two hundred twenty trillion, five hundred fifty-six billion, six hundred four million, seven hundred seven thousand, nine hundred eighty-five".