2215040161 has 2 divisors, whose sum is σ = 2215040162. Its totient is φ = 2215040160.

The previous prime is 2215040153. The next prime is 2215040237. The reversal of 2215040161 is 1610405122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1660155025 + 554885136 = 40745^2 + 23556^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215040161 - 2³ = 2215040153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215040131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107520080 + 1107520081.

It is an arithmetic number, because the mean of its divisors is an integer number (1107520081).

Almost surely, 2^2215040161 is an apocalyptic number.

It is an amenable number.

2215040161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215040161 is an equidigital number, since it uses as much as digits as its factorization.

2215040161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2215040161 is about 47064.2131666939. The cubic root of 2215040161 is about 1303.5485221852.

Adding to 2215040161 its reverse (1610405122), we get a palindrome (3825445283).

The spelling of 2215040161 in words is "two billion, two hundred fifteen million, forty thousand, one hundred sixty-one".