220620042645666 has 16 divisors (see below), whose sum is σ = 447825758206944. Its totient is φ = 72442402062624.

The previous prime is 220620042645643. The next prime is 220620042645703. The reversal of 220620042645666 is 666546240026022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274403037715 + ... + 274403038518.

It is an arithmetic number, because the mean of its divisors is an integer number (27989109887934).

Almost surely, 2^{220620042645666} is an apocalyptic number.

220620042645666 is an abundant number, since it is smaller than the sum of its proper divisors (227205715561278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220620042645666 is a wasteful number, since it uses less digits than its factorization.

220620042645666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548806076305.

The product of its (nonzero) digits is 9953280, while the sum is 51.

The spelling of 220620042645666 in words is "two hundred twenty trillion, six hundred twenty billion, forty-two million, six hundred forty-five thousand, six hundred sixty-six".