66679348633 has 8 divisors (see below), whose sum is σ = 66786675840. Its totient is φ = 66572101200.

The previous prime is 66679348597. The next prime is 66679348711. The reversal of 66679348633 is 33684397666.

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 66679348633 - 2⁹ = 66679348121 is a prime.

It is a super-2 number, since 2×66679348633² (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 (66679348133) 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, 1781728 + ... + 1818766.

It is an arithmetic number, because the mean of its divisors is an integer number (8348334480).

Almost surely, 2^66679348633 is an apocalyptic number.

It is an amenable number.

66679348633 is a deficient number, since it is larger than the sum of its proper divisors (107327207).

66679348633 is a wasteful number, since it uses less digits than its factorization.

66679348633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39887.

The product of its digits is 70543872, while the sum is 61.

The spelling of 66679348633 in words is "sixty-six billion, six hundred seventy-nine million, three hundred forty-eight thousand, six hundred thirty-three".