220665166562063 has 2 divisors, whose sum is σ = 220665166562064. Its totient is φ = 220665166562062.

The previous prime is 220665166562003. The next prime is 220665166562147. The reversal of 220665166562063 is 360265661566022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220665166562063 - 2¹² = 220665166557967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220665166562003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110332583281031 + 110332583281032.

It is an arithmetic number, because the mean of its divisors is an integer number (110332583281032).

Almost surely, 2^{220665166562063} is an apocalyptic number.

220665166562063 is a deficient number, since it is larger than the sum of its proper divisors (1).

220665166562063 is an equidigital number, since it uses as much as digits as its factorization.

220665166562063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 220665166562063 in words is "two hundred twenty trillion, six hundred sixty-five billion, one hundred sixty-six million, five hundred sixty-two thousand, sixty-three".