66152182661 has 2 divisors, whose sum is σ = 66152182662. Its totient is φ = 66152182660.

The previous prime is 66152182643. The next prime is 66152182669. The reversal of 66152182661 is 16628125166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33445460161 + 32706722500 = 182881^2 + 180850^2 .

It is a cyclic number.

It is not a de Polignac number, because 66152182661 - 2⁶ = 66152182597 is a prime.

It is a super-2 number, since 2×66152182661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66152182669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33076091330 + 33076091331.

It is an arithmetic number, because the mean of its divisors is an integer number (33076091331).

Almost surely, 2^66152182661 is an apocalyptic number.

It is an amenable number.

66152182661 is a deficient number, since it is larger than the sum of its proper divisors (1).

66152182661 is an equidigital number, since it uses as much as digits as its factorization.

66152182661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The spelling of 66152182661 in words is "sixty-six billion, one hundred fifty-two million, one hundred eighty-two thousand, six hundred sixty-one".