36543613666 has 24 divisors (see below), whose sum is σ = 64533142800. Its totient is φ = 15472851912.

The previous prime is 36543613663. The next prime is 36543613679. The reversal of 36543613666 is 66631634563.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (36543613663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2238216 + ... + 2254483.

It is an arithmetic number, because the mean of its divisors is an integer number (2688880950).

Almost surely, 2^36543613666 is an apocalyptic number.

36543613666 is a deficient number, since it is larger than the sum of its proper divisors (27989529134).

36543613666 is a wasteful number, since it uses less digits than its factorization.

36543613666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492798 (or 4492791 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 49.

The spelling of 36543613666 in words is "thirty-six billion, five hundred forty-three million, six hundred thirteen thousand, six hundred sixty-six".