11111717285 has 8 divisors (see below), whose sum is σ = 13793856120. Its totient is φ = 8582843584.

The previous prime is 11111717273. The next prime is 11111717311. The reversal of 11111717285 is 58271711111.

It can be written as a sum of positive squares in 4 ways, for example, as 1067067556 + 10044649729 = 32666^2 + 100223^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11111717285 - 2¹⁰ = 11111716261 is a prime.

It is a super-2 number, since 2×11111717285² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38316122 + ... + 38316411.

It is an arithmetic number, because the mean of its divisors is an integer number (1724232015).

Almost surely, 2^11111717285 is an apocalyptic number.

It is an amenable number.

11111717285 is a deficient number, since it is larger than the sum of its proper divisors (2682138835).

11111717285 is an equidigital number, since it uses as much as digits as its factorization.

11111717285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76632567.

The product of its digits is 3920, while the sum is 35.

The spelling of 11111717285 in words is "eleven billion, one hundred eleven million, seven hundred seventeen thousand, two hundred eighty-five".