66006026541173 has 2 divisors, whose sum is σ = 66006026541174. Its totient is φ = 66006026541172.

The previous prime is 66006026541139. The next prime is 66006026541197. The reversal of 66006026541173 is 37114562060066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38425642140964 + 27580384400209 = 6198842^2 + 5251703^2 .

It is a cyclic number.

It is not a de Polignac number, because 66006026541173 - 2²⁴ = 66006009763957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66006026541113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33003013270586 + 33003013270587.

It is an arithmetic number, because the mean of its divisors is an integer number (33003013270587).

Almost surely, 2^{66006026541173} is an apocalyptic number.

It is an amenable number.

66006026541173 is a deficient number, since it is larger than the sum of its proper divisors (1).

66006026541173 is an equidigital number, since it uses as much as digits as its factorization.

66006026541173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 66006026541173 in words is "sixty-six trillion, six billion, twenty-six million, five hundred forty-one thousand, one hundred seventy-three".