201665655052 has 6 divisors (see below), whose sum is σ = 352914896348. Its totient is φ = 100832827524.

The previous prime is 201665655049. The next prime is 201665655073. The reversal of 201665655052 is 250556566102.

201665655052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25208206878 + ... + 25208206885.

Almost surely, 2^201665655052 is an apocalyptic number.

It is an amenable number.

201665655052 is a deficient number, since it is larger than the sum of its proper divisors (151249241296).

201665655052 is a wasteful number, since it uses less digits than its factorization.

201665655052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50416413767 (or 50416413765 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 201665655052 in words is "two hundred one billion, six hundred sixty-five million, six hundred fifty-five thousand, fifty-two".