66684168481170 has 64 divisors (see below), whose sum is σ = 165227865707520. Its totient is φ = 17206399334400.

The previous prime is 66684168481103. The next prime is 66684168481187. The reversal of 66684168481170 is 7118486148666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1587886 + ... + 11657174.

It is an arithmetic number, because the mean of its divisors is an integer number (2581685401680).

Almost surely, 2^{66684168481170} is an apocalyptic number.

66684168481170 is an abundant number, since it is smaller than the sum of its proper divisors (98543697226350).

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

66684168481170 is a wasteful number, since it uses less digits than its factorization.

66684168481170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10076451.

The product of its (nonzero) digits is 74317824, while the sum is 66.

The spelling of 66684168481170 in words is "sixty-six trillion, six hundred eighty-four billion, one hundred sixty-eight million, four hundred eighty-one thousand, one hundred seventy".