36666542566 has 4 divisors (see below), whose sum is σ = 54999813852. Its totient is φ = 18333271282.

The previous prime is 36666542527. The next prime is 36666542581. The reversal of 36666542566 is 66524566663.

36666542566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9166635640 + ... + 9166635643.

It is an arithmetic number, because the mean of its divisors is an integer number (13749953463).

Almost surely, 2^36666542566 is an apocalyptic number.

36666542566 is a deficient number, since it is larger than the sum of its proper divisors (18333271286).

36666542566 is a wasteful number, since it uses less digits than its factorization.

36666542566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18333271285.

The product of its digits is 27993600, while the sum is 55.

The spelling of 36666542566 in words is "thirty-six billion, six hundred sixty-six million, five hundred forty-two thousand, five hundred sixty-six".