66140171127 has 6 divisors (see below), whose sum is σ = 95535802752. Its totient is φ = 44093447412.

The previous prime is 66140171113. The next prime is 66140171159. The reversal of 66140171127 is 72117104166.

66140171127 is a `hidden beast` number, since 6 + 61 + 401 + 71 + 127 = 666.

It is not a de Polignac number, because 66140171127 - 2⁶ = 66140171063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66140171091 and 66140171100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66140170127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3674453943 + ... + 3674453960.

It is an arithmetic number, because the mean of its divisors is an integer number (15922633792).

Almost surely, 2^66140171127 is an apocalyptic number.

66140171127 is a deficient number, since it is larger than the sum of its proper divisors (29395631625).

66140171127 is a wasteful number, since it uses less digits than its factorization.

66140171127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348907909 (or 7348907906 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 66140171127 in words is "sixty-six billion, one hundred forty million, one hundred seventy-one thousand, one hundred twenty-seven".