4066615261 has 2 divisors, whose sum is σ = 4066615262. Its totient is φ = 4066615260.

The previous prime is 4066615243. The next prime is 4066615279. The reversal of 4066615261 is 1625166604.

It is a balanced prime because it is at equal distance from previous prime (4066615243) and next prime (4066615279).

It can be written as a sum of positive squares in only one way, i.e., 3781512036 + 285103225 = 61494^2 + 16885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4066615261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4066615261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4066615361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2033307630 + 2033307631.

It is an arithmetic number, because the mean of its divisors is an integer number (2033307631).

Almost surely, 2^4066615261 is an apocalyptic number.

It is an amenable number.

4066615261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066615261 is an equidigital number, since it uses as much as digits as its factorization.

4066615261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 4066615261 is about 63770.0185118367. The cubic root of 4066615261 is about 1596.1646758859.

The spelling of 4066615261 in words is "four billion, sixty-six million, six hundred fifteen thousand, two hundred sixty-one".