66566546127 has 12 divisors (see below), whose sum is σ = 97002579024. Its totient is φ = 43984973760.

The previous prime is 66566546083. The next prime is 66566546131. The reversal of 66566546127 is 72164566566.

66566546127 is a `hidden beast` number, since 6 + 6 + 566 + 54 + 6 + 1 + 27 = 666.

It is not a de Polignac number, because 66566546127 - 2³⁰ = 65492804303 is a prime.

It is a super-2 number, since 2×66566546127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66566541127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32725899 + ... + 32727932.

It is an arithmetic number, because the mean of its divisors is an integer number (8083548252).

Almost surely, 2^66566546127 is an apocalyptic number.

66566546127 is a deficient number, since it is larger than the sum of its proper divisors (30436032897).

66566546127 is a wasteful number, since it uses less digits than its factorization.

66566546127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65453950 (or 65453947 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 66566546127 in words is "sixty-six billion, five hundred sixty-six million, five hundred forty-six thousand, one hundred twenty-seven".