201656161716 has 12 divisors (see below), whose sum is σ = 470531044032. Its totient is φ = 67218720568.

The previous prime is 201656161709. The next prime is 201656161741. The reversal of 201656161716 is 617161656102.

It is a happy number.

201656161716 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 8402340060 + ... + 8402340083.

It is an arithmetic number, because the mean of its divisors is an integer number (39210920336).

Almost surely, 2^201656161716 is an apocalyptic number.

It is an amenable number.

201656161716 is an abundant number, since it is smaller than the sum of its proper divisors (268874882316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201656161716 is a wasteful number, since it uses less digits than its factorization.

201656161716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16804680150 (or 16804680148 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 201656161716 in words is "two hundred one billion, six hundred fifty-six million, one hundred sixty-one thousand, seven hundred sixteen".