66005122127 has 8 divisors (see below), whose sum is σ = 75513587616. Its totient is φ = 56516447232.

The previous prime is 66005122081. The next prime is 66005122129. The reversal of 66005122127 is 72122150066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66005122127 - 2¹⁶ = 66005056591 is a prime.

It is a super-2 number, since 2×66005122127² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66005122093 and 66005122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66005122129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940498 + ... + 4953839.

It is an arithmetic number, because the mean of its divisors is an integer number (9439198452).

Almost surely, 2^66005122127 is an apocalyptic number.

66005122127 is a deficient number, since it is larger than the sum of its proper divisors (9508465489).

66005122127 is an equidigital number, since it uses as much as digits as its factorization.

66005122127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9895297.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 66005122127 in words is "sixty-six billion, five million, one hundred twenty-two thousand, one hundred twenty-seven".