4066011261 has 24 divisors (see below), whose sum is σ = 6696963000. Its totient is φ = 2354973696.

The previous prime is 4066011253. The next prime is 4066011281. The reversal of 4066011261 is 1621106604.

4066011261 is a `hidden beast` number, since 40 + 6 + 601 + 12 + 6 + 1 = 666.

4066011261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48860100 + 4017151161 = 6990^2 + 63381^2 .

It is not a de Polignac number, because 4066011261 - 2³ = 4066011253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066011251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1020136 + ... + 1024113.

It is an arithmetic number, because the mean of its divisors is an integer number (279040125).

Almost surely, 2^4066011261 is an apocalyptic number.

It is an amenable number.

4066011261 is a deficient number, since it is larger than the sum of its proper divisors (2630951739).

4066011261 is a wasteful number, since it uses less digits than its factorization.

4066011261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044285 (or 2044282 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4066011261 is about 63765.2825681813. The cubic root of 4066011261 is about 1596.0856477394.

Adding to 4066011261 its reverse (1621106604), we get a palindrome (5687117865).

The spelling of 4066011261 in words is "four billion, sixty-six million, eleven thousand, two hundred sixty-one".