66666330615 has 8 divisors (see below), whose sum is σ = 106666129008. Its totient is φ = 35555376320.

The previous prime is 66666330593. The next prime is 66666330629. The reversal of 66666330615 is 51603366666.

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

It is not a de Polignac number, because 66666330615 - 2⁹ = 66666330103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222211006 + ... + 2222211035.

It is an arithmetic number, because the mean of its divisors is an integer number (13333266126).

Almost surely, 2^66666330615 is an apocalyptic number.

66666330615 is a deficient number, since it is larger than the sum of its proper divisors (39999798393).

66666330615 is a wasteful number, since it uses less digits than its factorization.

66666330615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444422049.

The product of its (nonzero) digits is 2099520, while the sum is 48.

The spelling of 66666330615 in words is "sixty-six billion, six hundred sixty-six million, three hundred thirty thousand, six hundred fifteen".