660100105566 has 64 divisors (see below), whose sum is σ = 1626476256000. Its totient is φ = 196751138400.

The previous prime is 660100105549. The next prime is 660100105589. The reversal of 660100105566 is 665501001066.

It is a self number, because there is not a number n which added to its sum of digits gives 660100105566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9072616 + ... + 9145083.

It is an arithmetic number, because the mean of its divisors is an integer number (25413691500).

Almost surely, 2^660100105566 is an apocalyptic number.

660100105566 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

660100105566 is an abundant number, since it is smaller than the sum of its proper divisors (966376150434).

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

660100105566 is a wasteful number, since it uses less digits than its factorization.

660100105566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18217782 (or 18217776 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 660100105566 in words is "six hundred sixty billion, one hundred million, one hundred five thousand, five hundred sixty-six".