2160808061 has 2 divisors, whose sum is σ = 2160808062. Its totient is φ = 2160808060.

The previous prime is 2160808049. The next prime is 2160808073. The reversal of 2160808061 is 1608080612.

2160808061 = 32869² + 32870².

It is a balanced prime because it is at equal distance from previous prime (2160808049) and next prime (2160808073).

It can be written as a sum of positive squares in only one way, i.e., 1080436900 + 1080371161 = 32870^2 + 32869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2160808061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2160808561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080404030 + 1080404031.

It is an arithmetic number, because the mean of its divisors is an integer number (1080404031).

Almost surely, 2^2160808061 is an apocalyptic number.

2160808061 is the 32870-th centered square number.

It is an amenable number.

2160808061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160808061 is an equidigital number, since it uses as much as digits as its factorization.

2160808061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2160808061 is about 46484.4926938006. The cubic root of 2160808061 is about 1292.8219897230.

Adding to 2160808061 its reverse (1608080612), we get a palindrome (3768888673).

The spelling of 2160808061 in words is "two billion, one hundred sixty million, eight hundred eight thousand, sixty-one".