5185561231217 has 8 divisors (see below), whose sum is σ = 5490616801896. Its totient is φ = 4880508166912.

The previous prime is 5185561231211. The next prime is 5185561231223. The reversal of 5185561231217 is 7121321655815.

It is an interprime number because it is at equal distance from previous prime (5185561231211) and next prime (5185561231223).

It can be written as a sum of positive squares in 4 ways, for example, as 478987183921 + 4706574047296 = 692089^2 + 2169464^2 .

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-5185561231217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5185561231211) 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, 5159843 + ... + 6082359.

It is an arithmetic number, because the mean of its divisors is an integer number (686327100237).

Almost surely, 2^{5185561231217} is an apocalyptic number.

It is an amenable number.

5185561231217 is a deficient number, since it is larger than the sum of its proper divisors (305055570679).

5185561231217 is a wasteful number, since it uses less digits than its factorization.

5185561231217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253187.

The product of its digits is 504000, while the sum is 47.

The spelling of 5185561231217 in words is "five trillion, one hundred eighty-five billion, five hundred sixty-one million, two hundred thirty-one thousand, two hundred seventeen".