5216268618 has 144 divisors (see below), whose sum is σ = 13018955040. Its totient is φ = 1564025760.

The previous prime is 5216268611. The next prime is 5216268619. The reversal of 5216268618 is 8168626125.

5216268618 is a `hidden beast` number, since 5 + 2 + 1 + 6 + 26 + 8 + 618 = 666.

It is not an unprimeable number, because it can be changed into a prime (5216268611) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6291828 + ... + 6292656.

It is an arithmetic number, because the mean of its divisors is an integer number (90409410).

Almost surely, 2^5216268618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5216268618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6509477520).

5216268618 is an abundant number, since it is smaller than the sum of its proper divisors (7802686422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5216268618 is a wasteful number, since it uses less digits than its factorization.

5216268618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 952 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 5216268618 is about 72223.7399890092. The cubic root of 5216268618 is about 1734.2830622295.

The spelling of 5216268618 in words is "five billion, two hundred sixteen million, two hundred sixty-eight thousand, six hundred eighteen".