2741565681 has 6 divisors (see below), whose sum is σ = 3960039330. Its totient is φ = 1827710448.

The previous prime is 2741565667. The next prime is 2741565691. The reversal of 2741565681 is 1865651472.

2741565681 is a `hidden beast` number, since 2 + 7 + 4 + 1 + 565 + 6 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2444313600 + 297252081 = 49440^2 + 17241^2 .

It is not a de Polignac number, because 2741565681 - 2⁷ = 2741565553 is a prime.

It is a super-2 number, since 2×2741565681² = 15032364766473987522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2741565691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152309196 + ... + 152309213.

It is an arithmetic number, because the mean of its divisors is an integer number (660006555).

Almost surely, 2^2741565681 is an apocalyptic number.

It is an amenable number.

2741565681 is a deficient number, since it is larger than the sum of its proper divisors (1218473649).

2741565681 is a wasteful number, since it uses less digits than its factorization.

2741565681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304618415 (or 304618412 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2741565681 is about 52359.9625763808. The cubic root of 2741565681 is about 1399.5858776841.

It can be divided in two parts, 27415 and 65681, that added together give a triangular number (93096 = T₄₃₁).

The spelling of 2741565681 in words is "two billion, seven hundred forty-one million, five hundred sixty-five thousand, six hundred eighty-one".