201112016509 has 16 divisors (see below), whose sum is σ = 210418208640. Its totient is φ = 191976120000.

The previous prime is 201112016507. The next prime is 201112016513. The reversal of 201112016509 is 905610211102.

It is a cyclic number.

It is not a de Polignac number, because 201112016509 - 2¹ = 201112016507 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 (201112016503) 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, 815139 + ... + 1032799.

It is an arithmetic number, because the mean of its divisors is an integer number (13151138040).

Almost surely, 2^201112016509 is an apocalyptic number.

201112016509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

201112016509 is a deficient number, since it is larger than the sum of its proper divisors (9306192131).

201112016509 is a wasteful number, since it uses less digits than its factorization.

201112016509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218052.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 201112016509 in words is "two hundred one billion, one hundred twelve million, sixteen thousand, five hundred nine".