66611143153 has 2 divisors, whose sum is σ = 66611143154. Its totient is φ = 66611143152.

The previous prime is 66611143139. The next prime is 66611143187. The reversal of 66611143153 is 35134111666.

66611143153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52414897249 + 14196245904 = 228943^2 + 119148^2 .

It is a cyclic number.

It is not a de Polignac number, because 66611143153 - 2⁹ = 66611142641 is a prime.

It is not a weakly prime, because it can be changed into another prime (66611149153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33305571576 + 33305571577.

It is an arithmetic number, because the mean of its divisors is an integer number (33305571577).

Almost surely, 2^66611143153 is an apocalyptic number.

It is an amenable number.

66611143153 is a deficient number, since it is larger than the sum of its proper divisors (1).

66611143153 is an equidigital number, since it uses as much as digits as its factorization.

66611143153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

It can be divided in two parts, 66611 and 143153, that added together give a square (209764 = 458²).

The spelling of 66611143153 in words is "sixty-six billion, six hundred eleven million, one hundred forty-three thousand, one hundred fifty-three".