3666666136547 has 8 divisors (see below), whose sum is σ = 3727276050672. Its totient is φ = 3606072372000.

The previous prime is 3666666136531. The next prime is 3666666136571. The reversal of 3666666136547 is 7456316666663.

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 3666666136547 - 2⁴ = 3666666136531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666666136517) 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, 3579128 + ... + 4488149.

It is an arithmetic number, because the mean of its divisors is an integer number (465909506334).

Almost surely, 2^{3666666136547} is an apocalyptic number.

3666666136547 is a deficient number, since it is larger than the sum of its proper divisors (60609914125).

3666666136547 is an equidigital number, since it uses as much as digits as its factorization.

3666666136547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074789.

The product of its digits is 352719360, while the sum is 65.

The spelling of 3666666136547 in words is "three trillion, six hundred sixty-six billion, six hundred sixty-six million, one hundred thirty-six thousand, five hundred forty-seven".