5167218685 has 4 divisors (see below), whose sum is σ = 6200662428. Its totient is φ = 4133774944.

The previous prime is 5167218673. The next prime is 5167218703. The reversal of 5167218685 is 5868127615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3463675609 + 1703543076 = 58853^2 + 41274^2 .

It is a cyclic number.

It is not a de Polignac number, because 5167218685 - 2⁵ = 5167218653 is a prime.

It is a super-2 number, since 2×5167218685² = 53400297877226258450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516721864 + ... + 516721873.

It is an arithmetic number, because the mean of its divisors is an integer number (1550165607).

Almost surely, 2^5167218685 is an apocalyptic number.

It is an amenable number.

5167218685 is a deficient number, since it is larger than the sum of its proper divisors (1033443743).

5167218685 is a wasteful number, since it uses less digits than its factorization.

5167218685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033443742.

The product of its digits is 806400, while the sum is 49.

The square root of 5167218685 is about 71883.3686258511. The cubic root of 5167218685 is about 1728.8299621940.

The spelling of 5167218685 in words is "five billion, one hundred sixty-seven million, two hundred eighteen thousand, six hundred eighty-five".