4066137521 has 2 divisors, whose sum is σ = 4066137522. Its totient is φ = 4066137520.

The previous prime is 4066137419. The next prime is 4066137563. The reversal of 4066137521 is 1257316604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4065465121 + 672400 = 63761^2 + 820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4066137521 is a prime.

It is not a weakly prime, because it can be changed into another prime (4066130521) 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 as a sum of consecutive naturals, namely, 2033068760 + 2033068761.

It is an arithmetic number, because the mean of its divisors is an integer number (2033068761).

Almost surely, 2^4066137521 is an apocalyptic number.

It is an amenable number.

4066137521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066137521 is an equidigital number, since it uses as much as digits as its factorization.

4066137521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 4066137521 is about 63766.2725976672. The cubic root of 4066137521 is about 1596.1021684092.

The spelling of 4066137521 in words is "four billion, sixty-six million, one hundred thirty-seven thousand, five hundred twenty-one".