2185363364317 has 12 divisors (see below), whose sum is σ = 2544449743260. Its totient is φ = 1871479490496.

The previous prime is 2185363364309. The next prime is 2185363364377. The reversal of 2185363364317 is 7134633635812.

It can be written as a sum of positive squares in 2 ways, for example, as 282525203961 + 1902838160356 = 531531^2 + 1379434^2 .

It is not a de Polignac number, because 2185363364317 - 2³ = 2185363364309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185363364377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20053528 + ... + 20162209.

It is an arithmetic number, because the mean of its divisors is an integer number (212037478605).

Almost surely, 2^{2185363364317} is an apocalyptic number.

It is an amenable number.

2185363364317 is a deficient number, since it is larger than the sum of its proper divisors (359086378943).

2185363364317 is a wasteful number, since it uses less digits than its factorization.

2185363364317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40216860 (or 40216853 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 52.

It can be divided in two parts, 218536 and 3364317, that added together give a palindrome (3582853).

The spelling of 2185363364317 in words is "two trillion, one hundred eighty-five billion, three hundred sixty-three million, three hundred sixty-four thousand, three hundred seventeen".