5216645858 has 4 divisors (see below), whose sum is σ = 7824968790. Its totient is φ = 2608322928.

The previous prime is 5216645851. The next prime is 5216645887. The reversal of 5216645858 is 8585466125.

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

It can be written as a sum of positive squares in only one way, i.e., 4934641009 + 282004849 = 70247^2 + 16793^2 .

It is not an unprimeable number, because it can be changed into a prime (5216645851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304161463 + ... + 1304161466.

Almost surely, 2^5216645858 is an apocalyptic number.

5216645858 is a deficient number, since it is larger than the sum of its proper divisors (2608322932).

5216645858 is a wasteful number, since it uses less digits than its factorization.

5216645858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608322931.

The product of its digits is 2304000, while the sum is 50.

The square root of 5216645858 is about 72226.3515484480. The cubic root of 5216645858 is about 1734.3248689449.

The spelling of 5216645858 in words is "five billion, two hundred sixteen million, six hundred forty-five thousand, eight hundred fifty-eight".