66144700001 has 2 divisors, whose sum is σ = 66144700002. Its totient is φ = 66144700000.

The previous prime is 66144699977. The next prime is 66144700007. The reversal of 66144700001 is 10000744166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52356304225 + 13788395776 = 228815^2 + 117424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66144700001 is a prime.

It is not a weakly prime, because it can be changed into another prime (66144700007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33072350000 + 33072350001.

It is an arithmetic number, because the mean of its divisors is an integer number (33072350001).

Almost surely, 2^66144700001 is an apocalyptic number.

It is an amenable number.

66144700001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66144700001 is an equidigital number, since it uses as much as digits as its factorization.

66144700001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 66144700001 in words is "sixty-six billion, one hundred forty-four million, seven hundred thousand, one".