8666669781170 has 64 divisors (see below), whose sum is σ = 16043382343296. Its totient is φ = 3368397726720.

The previous prime is 8666669781167. The next prime is 8666669781173. The reversal of 8666669781170 is 711879666668.

It is an interprime number because it is at equal distance from previous prime (8666669781167) and next prime (8666669781173).

It is a super-2 number, since 2×8666669781170² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8666669781094 and 8666669781103.

It is not an unprimeable number, because it can be changed into a prime (8666669781173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958591850 + ... + 958600890.

It is an arithmetic number, because the mean of its divisors is an integer number (250677849114).

Almost surely, 2^{8666669781170} is an apocalyptic number.

8666669781170 is a deficient number, since it is larger than the sum of its proper divisors (7376712562126).

8666669781170 is a wasteful number, since it uses less digits than its factorization.

8666669781170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 8666669781170 in words is "eight trillion, six hundred sixty-six billion, six hundred sixty-nine million, seven hundred eighty-one thousand, one hundred seventy".