66666446646058 has 32 divisors (see below), whose sum is σ = 117420545692800. Its totient is φ = 27797516872704.

The previous prime is 66666446646053. The next prime is 66666446646061. The reversal of 66666446646058 is 85064664466666.

It is not an unprimeable number, because it can be changed into a prime (66666446646053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415950723 + ... + 416110966.

It is an arithmetic number, because the mean of its divisors is an integer number (3669392052900).

Almost surely, 2^{66666446646058} is an apocalyptic number.

66666446646058 is a deficient number, since it is larger than the sum of its proper divisors (50754099046742).

66666446646058 is a wasteful number, since it uses less digits than its factorization.

66666446646058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832061854.

The product of its (nonzero) digits is 4299816960, while the sum is 73.

The spelling of 66666446646058 in words is "sixty-six trillion, six hundred sixty-six billion, four hundred forty-six million, six hundred forty-six thousand, fifty-eight".