2061126161 has 2 divisors, whose sum is σ = 2061126162. Its totient is φ = 2061126160.

The previous prime is 2061126149. The next prime is 2061126167. The reversal of 2061126161 is 1616211602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1757286400 + 303839761 = 41920^2 + 17431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061126161 - 2¹⁰ = 2061125137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2061126161.

It is not a weakly prime, because it can be changed into another prime (2061126167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030563080 + 1030563081.

It is an arithmetic number, because the mean of its divisors is an integer number (1030563081).

Almost surely, 2^2061126161 is an apocalyptic number.

It is an amenable number.

2061126161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061126161 is an equidigital number, since it uses as much as digits as its factorization.

2061126161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2061126161 is about 45399.6273222589. The cubic root of 2061126161 is about 1272.6281494062.

Adding to 2061126161 its reverse (1616211602), we get a palindrome (3677337763).

The spelling of 2061126161 in words is "two billion, sixty-one million, one hundred twenty-six thousand, one hundred sixty-one".