66651060001 has 2 divisors, whose sum is σ = 66651060002. Its totient is φ = 66651060000.

The previous prime is 66651059873. The next prime is 66651060019. The reversal of 66651060001 is 10006015666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66131265600 + 519794401 = 257160^2 + 22799^2 .

It is a cyclic number.

It is not a de Polignac number, because 66651060001 - 2⁷ = 66651059873 is a prime.

It is not a weakly prime, because it can be changed into another prime (66651060061) 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, 33325530000 + 33325530001.

It is an arithmetic number, because the mean of its divisors is an integer number (33325530001).

Almost surely, 2^66651060001 is an apocalyptic number.

It is an amenable number.

66651060001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66651060001 is an equidigital number, since it uses as much as digits as its factorization.

66651060001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 66651060001 its reverse (10006015666), we get a palindrome (76657075667).

The spelling of 66651060001 in words is "sixty-six billion, six hundred fifty-one million, sixty thousand, one".