3666542536066 has 8 divisors (see below), whose sum is σ = 5648457420540. Its totient is φ = 1783723395888.

The previous prime is 3666542536043. The next prime is 3666542536091. The reversal of 3666542536066 is 6606352456663.

It can be written as a sum of positive squares in 2 ways, for example, as 3624283100025 + 42259436041 = 1903755^2 + 205571^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3666542536066.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24773935981 + ... + 24773936128.

Almost surely, 2^{3666542536066} is an apocalyptic number.

3666542536066 is a deficient number, since it is larger than the sum of its proper divisors (1981914884474).

3666542536066 is a wasteful number, since it uses less digits than its factorization.

3666542536066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49547872148.

The product of its (nonzero) digits is 83980800, while the sum is 58.

The spelling of 3666542536066 in words is "three trillion, six hundred sixty-six billion, five hundred forty-two million, five hundred thirty-six thousand, sixty-six".