5165853817 has 4 divisors (see below), whose sum is σ = 5437740880. Its totient is φ = 4893966756.

The previous prime is 5165853769. The next prime is 5165853821. The reversal of 5165853817 is 7183585615.

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 5165853817 - 2⁷ = 5165853689 is a prime.

It is a super-2 number, since 2×5165853817² = 53372091317226938978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5165853617) 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, 135943503 + ... + 135943540.

It is an arithmetic number, because the mean of its divisors is an integer number (1359435220).

Almost surely, 2^5165853817 is an apocalyptic number.

It is an amenable number.

5165853817 is a deficient number, since it is larger than the sum of its proper divisors (271887063).

5165853817 is a wasteful number, since it uses less digits than its factorization.

5165853817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271887062.

The product of its digits is 1008000, while the sum is 49.

The square root of 5165853817 is about 71873.8743703162. The cubic root of 5165853817 is about 1728.6777312020.

The spelling of 5165853817 in words is "five billion, one hundred sixty-five million, eight hundred fifty-three thousand, eight hundred seventeen".