201570545350217 has 4 divisors (see below), whose sum is σ = 201813694380420. Its totient is φ = 201327396320016.

The previous prime is 201570545350193. The next prime is 201570545350249. The reversal of 201570545350217 is 712053545075102.

201570545350217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36782720895376 + 164787824454841 = 6064876^2 + 12836971^2 .

It is a cyclic number.

It is not a de Polignac number, because 201570545350217 - 2²² = 201570541155913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201570545355217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121574513858 + ... + 121574515515.

It is an arithmetic number, because the mean of its divisors is an integer number (50453423595105).

Almost surely, 2^{201570545350217} is an apocalyptic number.

It is an amenable number.

201570545350217 is a deficient number, since it is larger than the sum of its proper divisors (243149030203).

201570545350217 is an equidigital number, since it uses as much as digits as its factorization.

201570545350217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243149030202.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 201570545350217 in words is "two hundred one trillion, five hundred seventy billion, five hundred forty-five million, three hundred fifty thousand, two hundred seventeen".