66829127911 has 16 divisors (see below), whose sum is σ = 85827377664. Its totient is φ = 50576844384.

The previous prime is 66829127909. The next prime is 66829127921. The reversal of 66829127911 is 11972192866.

It is a cyclic number.

It is not a de Polignac number, because 66829127911 - 2¹ = 66829127909 is a prime.

It is a super-2 number, since 2×66829127911² (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 (66829127921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15962821 + ... + 15967006.

It is an arithmetic number, because the mean of its divisors is an integer number (5364211104).

Almost surely, 2^66829127911 is an apocalyptic number.

66829127911 is a deficient number, since it is larger than the sum of its proper divisors (18998249753).

66829127911 is a wasteful number, since it uses less digits than its factorization.

66829127911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31929870.

The product of its digits is 653184, while the sum is 52.

The spelling of 66829127911 in words is "sixty-six billion, eight hundred twenty-nine million, one hundred twenty-seven thousand, nine hundred eleven".