66076721226133 has 2 divisors, whose sum is σ = 66076721226134. Its totient is φ = 66076721226132.

The previous prime is 66076721226091. The next prime is 66076721226203. The reversal of 66076721226133 is 33162212767066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55571389162884 + 10505332063249 = 7454622^2 + 3241193^2 .

It is a cyclic number.

It is not a de Polignac number, because 66076721226133 - 2²⁹ = 66076184355221 is a prime.

It is a super-2 number, since 2×66076721226133² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66076721226233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33038360613066 + 33038360613067.

It is an arithmetic number, because the mean of its divisors is an integer number (33038360613067).

Almost surely, 2^{66076721226133} is an apocalyptic number.

It is an amenable number.

66076721226133 is a deficient number, since it is larger than the sum of its proper divisors (1).

66076721226133 is an equidigital number, since it uses as much as digits as its factorization.

66076721226133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 52.

The spelling of 66076721226133 in words is "sixty-six trillion, seventy-six billion, seven hundred twenty-one million, two hundred twenty-six thousand, one hundred thirty-three".