201210666616 has 32 divisors (see below), whose sum is σ = 384896694240. Its totient is φ = 98576569728.

The previous prime is 201210666607. The next prime is 201210666641. The reversal of 201210666616 is 616666012102.

It is a congruent number.

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, 7525 + ... + 634411.

It is an arithmetic number, because the mean of its divisors is an integer number (12028021695).

Almost surely, 2^201210666616 is an apocalyptic number.

It is an amenable number.

201210666616 is a deficient number, since it is larger than the sum of its proper divisors (183686027624).

201210666616 is a wasteful number, since it uses less digits than its factorization.

201210666616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627703 (or 627699 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 201210666616 its reverse (616666012102), we get a palindrome (817876678718).

The spelling of 201210666616 in words is "two hundred one billion, two hundred ten million, six hundred sixty-six thousand, six hundred sixteen".