1066660116220 has 24 divisors (see below), whose sum is σ = 2242656108000. Its totient is φ = 426155500992.

The previous prime is 1066660116217. The next prime is 1066660116227. The reversal of 1066660116220 is 226110666601.

It is a super-2 number, since 2×1066660116220² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066660116220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066660116227) 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, 31766895 + ... + 31800454.

It is an arithmetic number, because the mean of its divisors is an integer number (93444004500).

Almost surely, 2^{1066660116220} is an apocalyptic number.

1066660116220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066660116220 is an abundant number, since it is smaller than the sum of its proper divisors (1175995991780).

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

1066660116220 is a wasteful number, since it uses less digits than its factorization.

1066660116220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63568197 (or 63568195 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 1066660116220 in words is "one trillion, sixty-six billion, six hundred sixty million, one hundred sixteen thousand, two hundred twenty".