11803570217 has 8 divisors (see below), whose sum is σ = 11826642600. Its totient is φ = 11780521984.

The previous prime is 11803570139. The next prime is 11803570249. The reversal of 11803570217 is 71207530811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 342583081 + 11460987136 = 18509^2 + 107056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11803570217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11803570417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192553 + ... + 1202409.

It is an arithmetic number, because the mean of its divisors is an integer number (1478330325).

Almost surely, 2^11803570217 is an apocalyptic number.

It is an amenable number.

11803570217 is a deficient number, since it is larger than the sum of its proper divisors (23072383).

11803570217 is an equidigital number, since it uses as much as digits as its factorization.

11803570217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 11803570217 in words is "eleven billion, eight hundred three million, five hundred seventy thousand, two hundred seventeen".