64011161 has 2 divisors, whose sum is σ = 64011162. Its totient is φ = 64011160.

The previous prime is 64011151. The next prime is 64011217. The reversal of 64011161 is 16111046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 25806400 = 6181^2 + 5080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64011161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64011151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32005580 + 32005581.

It is an arithmetic number, because the mean of its divisors is an integer number (32005581).

Almost surely, 2^64011161 is an apocalyptic number.

It is an amenable number.

64011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

64011161 is an equidigital number, since it uses as much as digits as its factorization.

64011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 64011161 is about 8000.6975320906. The cubic root of 64011161 is about 400.0232507318.

The spelling of 64011161 in words is "sixty-four million, eleven thousand, one hundred sixty-one".