5218768161 has 12 divisors (see below), whose sum is σ = 7550175360. Its totient is φ = 3473661240.

The previous prime is 5218768141. The next prime is 5218768169. The reversal of 5218768161 is 1618678125.

5218768161 is a `hidden beast` number, since 521 + 8 + 7 + 68 + 1 + 61 = 666.

It is not a de Polignac number, because 5218768161 - 2⁶ = 5218768097 is a prime.

It is a super-2 number, since 2×5218768161² = 54471082236534643842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5218768169) 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, 453801 + ... + 465158.

It is an arithmetic number, because the mean of its divisors is an integer number (629181280).

Almost surely, 2^5218768161 is an apocalyptic number.

It is an amenable number.

5218768161 is a deficient number, since it is larger than the sum of its proper divisors (2331407199).

5218768161 is a wasteful number, since it uses less digits than its factorization.

5218768161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919596 (or 919593 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 5218768161 is about 72241.0420813543. The cubic root of 5218768161 is about 1734.5600305112.

The spelling of 5218768161 in words is "five billion, two hundred eighteen million, seven hundred sixty-eight thousand, one hundred sixty-one".