1066866908506 has 32 divisors (see below), whose sum is σ = 1867121798400.
Its totient is φ = 447763344000.
The previous prime is 1066866908501. The next prime is 1066866908509. The reversal of 1066866908506 is 6058096686601.
It is a super-2 number, since 2×10668669085062 (a number of 25 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (1066866908501) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3453595 + ... + 3749806.
It is an arithmetic number, because the mean of its divisors is an integer number (58347556200).
Almost surely, 21066866908506 is an apocalyptic number.
1066866908506 is a deficient number, since it is larger than the sum of its proper divisors (800254889894).
1066866908506 is a wasteful number, since it uses less digits than its factorization.
1066866908506 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7203630.
The product of its (nonzero) digits is 22394880, while the sum is 61.
The spelling of 1066866908506 in words is "one trillion, sixty-six billion, eight hundred sixty-six million, nine hundred eight thousand, five hundred six".