66165050066 has 16 divisors (see below), whose sum is σ = 99521200800. Its totient is φ = 32991375648.

The previous prime is 66165050059. The next prime is 66165050099. The reversal of 66165050066 is 66005056166.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516846 + ... + 2542998.

It is an arithmetic number, because the mean of its divisors is an integer number (6220075050).

Almost surely, 2^66165050066 is an apocalyptic number.

66165050066 is a deficient number, since it is larger than the sum of its proper divisors (33356150734).

66165050066 is a wasteful number, since it uses less digits than its factorization.

66165050066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29593.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 66165050066 in words is "sixty-six billion, one hundred sixty-five million, fifty thousand, sixty-six".