66376284539 has 8 divisors (see below), whose sum is σ = 68539806720. Its totient is φ = 64214159400.

The previous prime is 66376284511. The next prime is 66376284581. The reversal of 66376284539 is 93548267366.

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 not a de Polignac number, because 66376284539 - 2¹⁶ = 66376219003 is a prime.

It is a super-2 number, since 2×66376284539² (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 (66376284439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252257 + ... + 443154.

It is an arithmetic number, because the mean of its divisors is an integer number (8567475840).

Almost surely, 2^66376284539 is an apocalyptic number.

66376284539 is a deficient number, since it is larger than the sum of its proper divisors (2163522181).

66376284539 is a wasteful number, since it uses less digits than its factorization.

66376284539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698521.

The product of its digits is 39191040, while the sum is 59.

The spelling of 66376284539 in words is "sixty-six billion, three hundred seventy-six million, two hundred eighty-four thousand, five hundred thirty-nine".