66114430321 has 8 divisors (see below), whose sum is σ = 71291556000. Its totient is φ = 61107046560.

The previous prime is 66114430309. The next prime is 66114430379. The reversal of 66114430321 is 12303441166.

It is a happy number.

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-66114430321 is a prime.

It is a super-2 number, since 2×66114430321² (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 (66114430121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42434671 + ... + 42436228.

It is an arithmetic number, because the mean of its divisors is an integer number (8911444500).

Almost surely, 2^66114430321 is an apocalyptic number.

It is an amenable number.

66114430321 is a deficient number, since it is larger than the sum of its proper divisors (5177125679).

66114430321 is a wasteful number, since it uses less digits than its factorization.

66114430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84870959.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 66114430321 its reverse (12303441166), we get a palindrome (78417871487).

The spelling of 66114430321 in words is "sixty-six billion, one hundred fourteen million, four hundred thirty thousand, three hundred twenty-one".