2741671561 has 2 divisors, whose sum is σ = 2741671562. Its totient is φ = 2741671560.

The previous prime is 2741671511. The next prime is 2741671567. The reversal of 2741671561 is 1651761472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2219823225 + 521848336 = 47115^2 + 22844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2741671561 - 2¹⁵ = 2741638793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2741671567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370835780 + 1370835781.

It is an arithmetic number, because the mean of its divisors is an integer number (1370835781).

Almost surely, 2^2741671561 is an apocalyptic number.

It is an amenable number.

2741671561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2741671561 is an equidigital number, since it uses as much as digits as its factorization.

2741671561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 2741671561 is about 52360.9736444998. The cubic root of 2741671561 is about 1399.6038949125.

The spelling of 2741671561 in words is "two billion, seven hundred forty-one million, six hundred seventy-one thousand, five hundred sixty-one".