2661336071 has 2 divisors, whose sum is σ = 2661336072. Its totient is φ = 2661336070.

The previous prime is 2661336059. The next prime is 2661336089. The reversal of 2661336071 is 1706331662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661336071 - 2¹⁸ = 2661073927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661335071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330668035 + 1330668036.

It is an arithmetic number, because the mean of its divisors is an integer number (1330668036).

Almost surely, 2^2661336071 is an apocalyptic number.

2661336071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661336071 is an equidigital number, since it uses as much as digits as its factorization.

2661336071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 2661336071 is about 51588.1388596255. The cubic root of 2661336071 is about 1385.7979251769.

The spelling of 2661336071 in words is "two billion, six hundred sixty-one million, three hundred thirty-six thousand, seventy-one".