201165656066 has 8 divisors (see below), whose sum is σ = 304678081344. Its totient is φ = 99606295620.

The previous prime is 201165656059. The next prime is 201165656123. The reversal of 201165656066 is 660656561102.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488265950 + ... + 488266361.

It is an arithmetic number, because the mean of its divisors is an integer number (38084760168).

Almost surely, 2^201165656066 is an apocalyptic number.

201165656066 is a deficient number, since it is larger than the sum of its proper divisors (103512425278).

201165656066 is a wasteful number, since it uses less digits than its factorization.

201165656066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976532416.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 201165656066 in words is "two hundred one billion, one hundred sixty-five million, six hundred fifty-six thousand, sixty-six".