66066652889 has 8 divisors (see below), whose sum is σ = 66501233568. Its totient is φ = 65633218560.

The previous prime is 66066652811. The next prime is 66066652919. The reversal of 66066652889 is 98825666066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66066652889 is a prime.

It is a super-2 number, since 2×66066652889² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66066612889) 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, 170792 + ... + 401625.

It is an arithmetic number, because the mean of its divisors is an integer number (8312654196).

Almost surely, 2^66066652889 is an apocalyptic number.

It is an amenable number.

66066652889 is a deficient number, since it is larger than the sum of its proper divisors (434580679).

66066652889 is a wasteful number, since it uses less digits than its factorization.

66066652889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573175.

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 66066652889 in words is "sixty-six billion, sixty-six million, six hundred fifty-two thousand, eight hundred eighty-nine".