6568012161 has 6 divisors (see below), whose sum is σ = 9487128690. Its totient is φ = 4378674768.

The previous prime is 6568012079. The next prime is 6568012163. The reversal of 6568012161 is 1612108656.

It can be written as a sum of positive squares in only one way, i.e., 4810809600 + 1757202561 = 69360^2 + 41919^2 .

It is not a de Polignac number, because 6568012161 - 2⁹ = 6568011649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6568012163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364889556 + ... + 364889573.

It is an arithmetic number, because the mean of its divisors is an integer number (1581188115).

Almost surely, 2^6568012161 is an apocalyptic number.

It is an amenable number.

6568012161 is a deficient number, since it is larger than the sum of its proper divisors (2919116529).

6568012161 is a wasteful number, since it uses less digits than its factorization.

6568012161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729779135 (or 729779132 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 6568012161 is about 81043.2733852724. The cubic root of 6568012161 is about 1872.7421389385.

It can be divided in two parts, 65680 and 12161, that added together give a square (77841 = 279²).

The spelling of 6568012161 in words is "six billion, five hundred sixty-eight million, twelve thousand, one hundred sixty-one".