2661110461 has 2 divisors, whose sum is σ = 2661110462. Its totient is φ = 2661110460.

The previous prime is 2661110447. The next prime is 2661110467. The reversal of 2661110461 is 1640111662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2358559225 + 302551236 = 48565^2 + 17394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661110461 - 2⁹ = 2661109949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661110467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330555230 + 1330555231.

It is an arithmetic number, because the mean of its divisors is an integer number (1330555231).

Almost surely, 2^2661110461 is an apocalyptic number.

It is an amenable number.

2661110461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661110461 is an equidigital number, since it uses as much as digits as its factorization.

2661110461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2661110461 is about 51585.9521672325. The cubic root of 2661110461 is about 1385.7587645578.

The spelling of 2661110461 in words is "two billion, six hundred sixty-one million, one hundred ten thousand, four hundred sixty-one".