2041331661 has 12 divisors (see below), whose sum is σ = 3122036892. Its totient is φ = 1280835456.

The previous prime is 2041331659. The next prime is 2041331689. The reversal of 2041331661 is 1661331402.

It can be written as a sum of positive squares in 2 ways, for example, as 1633695561 + 407636100 = 40419^2 + 20190^2 .

It is not a de Polignac number, because 2041331661 - 2¹ = 2041331659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2041331651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6670866 + ... + 6671171.

It is an arithmetic number, because the mean of its divisors is an integer number (260169741).

Almost surely, 2^2041331661 is an apocalyptic number.

It is an amenable number.

2041331661 is a deficient number, since it is larger than the sum of its proper divisors (1080705231).

2041331661 is a wasteful number, since it uses less digits than its factorization.

2041331661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13342060 (or 13342057 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2041331661 is about 45181.0984926219. The cubic root of 2041331661 is about 1268.5410449771.

The spelling of 2041331661 in words is "two billion, forty-one million, three hundred thirty-one thousand, six hundred sixty-one".