201261716253 has 16 divisors (see below), whose sum is σ = 321101314240. Its totient is φ = 123853363632.

The previous prime is 201261716207. The next prime is 201261716263. The reversal of 201261716253 is 352617162102.

201261716253 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 617 + 16 + 25 + 3 = 666.

It is not a de Polignac number, because 201261716253 - 2¹³ = 201261708061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201261716263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286697251 + ... + 286697952.

It is an arithmetic number, because the mean of its divisors is an integer number (20068832140).

Almost surely, 2^201261716253 is an apocalyptic number.

It is an amenable number.

201261716253 is a deficient number, since it is larger than the sum of its proper divisors (119839597987).

201261716253 is a wasteful number, since it uses less digits than its factorization.

201261716253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573395225 (or 573395219 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 201261716253 its reverse (352617162102), we get a palindrome (553878878355).

The spelling of 201261716253 in words is "two hundred one billion, two hundred sixty-one million, seven hundred sixteen thousand, two hundred fifty-three".