66171116105160 has 128 divisors (see below), whose sum is σ = 216939283292160. Its totient is φ = 16013388844800.

The previous prime is 66171116105153. The next prime is 66171116105177. The reversal of 66171116105160 is 6150161117166.

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, 43142632 + ... + 44650071.

It is an arithmetic number, because the mean of its divisors is an integer number (1694838150720).

Almost surely, 2^{66171116105160} is an apocalyptic number.

66171116105160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66171116105160 is an abundant number, since it is smaller than the sum of its proper divisors (150768167187000).

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

66171116105160 is a wasteful number, since it uses less digits than its factorization.

66171116105160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87793299 (or 87793295 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 42.

The spelling of 66171116105160 in words is "sixty-six trillion, one hundred seventy-one billion, one hundred sixteen million, one hundred five thousand, one hundred sixty".