1066866908445 has 96 divisors (see below), whose sum is σ = 2001365349984. Its totient is φ = 522624614400.

The previous prime is 1066866908441. The next prime is 1066866908449. The reversal of 1066866908445 is 5448096686601.

1066866908445 is a `hidden beast` number, since 106 + 6 + 86 + 6 + 9 + 0 + 8 + 445 = 666.

It is an interprime number because it is at equal distance from previous prime (1066866908441) and next prime (1066866908449).

It can be written as a sum of positive squares in 16 ways, for example, as 171651947481 + 895214960964 = 414309^2 + 946158^2 .

It is not a de Polignac number, because 1066866908445 - 2² = 1066866908441 is a prime.

It is a super-2 number, since 2×1066866908445² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066866908441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 242632987 + ... + 242637383.

It is an arithmetic number, because the mean of its divisors is an integer number (20847555729).

Almost surely, 2^{1066866908445} is an apocalyptic number.

1066866908445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066866908445 is a deficient number, since it is larger than the sum of its proper divisors (934498441539).

1066866908445 is a wasteful number, since it uses less digits than its factorization.

1066866908445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 1066866908445 in words is "one trillion, sixty-six billion, eight hundred sixty-six million, nine hundred eight thousand, four hundred forty-five".