11217289873 has 4 divisors (see below), whose sum is σ = 11218091248. Its totient is φ = 11216488500.

The previous prime is 11217289841. The next prime is 11217289927. The reversal of 11217289873 is 37898271211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11217289873 - 2⁵ = 11217289841 is a prime.

It is a super-3 number, since 3×11217289873³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11217289823) 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, 379311 + ... + 407812.

It is an arithmetic number, because the mean of its divisors is an integer number (2804522812).

Almost surely, 2^11217289873 is an apocalyptic number.

It is an amenable number.

11217289873 is a deficient number, since it is larger than the sum of its proper divisors (801375).

11217289873 is an equidigital number, since it uses as much as digits as its factorization.

11217289873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801374.

The product of its digits is 338688, while the sum is 49.

The spelling of 11217289873 in words is "eleven billion, two hundred seventeen million, two hundred eighty-nine thousand, eight hundred seventy-three".