2568161320 has 16 divisors (see below), whose sum is σ = 5778363060. Its totient is φ = 1027264512.

The previous prime is 2568161293. The next prime is 2568161327. The reversal of 2568161320 is 231618652.

It can be written as a sum of positive squares in 2 ways, for example, as 2444906916 + 123254404 = 49446^2 + 11102^2 .

It is not an unprimeable number, because it can be changed into a prime (2568161327) 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, 32101977 + ... + 32102056.

Almost surely, 2^2568161320 is an apocalyptic number.

2568161320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2568161320 is an abundant number, since it is smaller than the sum of its proper divisors (3210201740).

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

2568161320 is a wasteful number, since it uses less digits than its factorization.

2568161320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64204044 (or 64204040 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2568161320 is about 50677.0295104202. The cubic root of 2568161320 is about 1369.4329299263.

Adding to 2568161320 its reverse (231618652), we get a palindrome (2799779972).

The spelling of 2568161320 in words is "two billion, five hundred sixty-eight million, one hundred sixty-one thousand, three hundred twenty".