66010948169 has 2 divisors, whose sum is σ = 66010948170. Its totient is φ = 66010948168.

The previous prime is 66010948153. The next prime is 66010948193. The reversal of 66010948169 is 96184901066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59672718400 + 6338229769 = 244280^2 + 79613^2 .

It is a cyclic number.

It is not a de Polignac number, because 66010948169 - 2⁴ = 66010948153 is a prime.

It is a super-2 number, since 2×66010948169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66010948469) 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, 33005474084 + 33005474085.

It is an arithmetic number, because the mean of its divisors is an integer number (33005474085).

Almost surely, 2^66010948169 is an apocalyptic number.

It is an amenable number.

66010948169 is a deficient number, since it is larger than the sum of its proper divisors (1).

66010948169 is an equidigital number, since it uses as much as digits as its factorization.

66010948169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 66010948169 in words is "sixty-six billion, ten million, nine hundred forty-eight thousand, one hundred sixty-nine".