66006220204266 has 16 divisors (see below), whose sum is σ = 132249446591904. Its totient is φ = 21962572370864.

The previous prime is 66006220204259. The next prime is 66006220204283. The reversal of 66006220204266 is 66240202260066.

It is a super-2 number, since 2×66006220204266² (a number of 28 digits) contains 22 as substring.

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, 9875254020 + ... + 9875260703.

It is an arithmetic number, because the mean of its divisors is an integer number (8265590411994).

Almost surely, 2^{66006220204266} is an apocalyptic number.

66006220204266 is an abundant number, since it is smaller than the sum of its proper divisors (66243226387638).

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

66006220204266 is a wasteful number, since it uses less digits than its factorization.

66006220204266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19750515285.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 66006220204266 in words is "sixty-six trillion, six billion, two hundred twenty million, two hundred four thousand, two hundred sixty-six".