220564666546 has 16 divisors (see below), whose sum is σ = 385245025344. Its totient is φ = 92744172144.

The previous prime is 220564666541. The next prime is 220564666579. The reversal of 220564666546 is 645666465022.

It is a junction number, because it is equal to n+sod(n) for n = 220564666493 and 220564666502.

It is not an unprimeable number, because it can be changed into a prime (220564666541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148627740 + ... + 148629223.

It is an arithmetic number, because the mean of its divisors is an integer number (24077814084).

Almost surely, 2^220564666546 is an apocalyptic number.

220564666546 is a deficient number, since it is larger than the sum of its proper divisors (164680358798).

220564666546 is a wasteful number, since it uses less digits than its factorization.

220564666546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297257025.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 220564666546 in words is "two hundred twenty billion, five hundred sixty-four million, six hundred sixty-six thousand, five hundred forty-six".