201219716009 has 16 divisors (see below), whose sum is σ = 221221049280. Its totient is φ = 181891344960.

The previous prime is 201219715979. The next prime is 201219716023. The reversal of 201219716009 is 900617912102.

It is a de Polignac number, because none of the positive numbers 2^k-201219716009 is a prime.

It is a super-2 number, since 2×201219716009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201219716209) 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, 378899 + ... + 738920.

It is an arithmetic number, because the mean of its divisors is an integer number (13826315580).

Almost surely, 2^201219716009 is an apocalyptic number.

It is an amenable number.

201219716009 is a deficient number, since it is larger than the sum of its proper divisors (20001333271).

201219716009 is a wasteful number, since it uses less digits than its factorization.

201219716009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118120.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 201219716009 in words is "two hundred one billion, two hundred nineteen million, seven hundred sixteen thousand, nine".