201109005917 has 2 divisors, whose sum is σ = 201109005918. Its totient is φ = 201109005916.

The previous prime is 201109005887. The next prime is 201109005941. The reversal of 201109005917 is 719500901102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195765542116 + 5343463801 = 442454^2 + 73099^2 .

It is a cyclic number.

It is not a de Polignac number, because 201109005917 - 2²⁸ = 200840570461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201109005967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100554502958 + 100554502959.

It is an arithmetic number, because the mean of its divisors is an integer number (100554502959).

Almost surely, 2^201109005917 is an apocalyptic number.

It is an amenable number.

201109005917 is a deficient number, since it is larger than the sum of its proper divisors (1).

201109005917 is an equidigital number, since it uses as much as digits as its factorization.

201109005917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 35.

The spelling of 201109005917 in words is "two hundred one billion, one hundred nine million, five thousand, nine hundred seventeen".