66173015143 has 2 divisors, whose sum is σ = 66173015144. Its totient is φ = 66173015142.

The previous prime is 66173015113. The next prime is 66173015173. The reversal of 66173015143 is 34151037166.

It is a balanced prime because it is at equal distance from previous prime (66173015113) and next prime (66173015173).

It is a cyclic number.

It is not a de Polignac number, because 66173015143 - 2³³ = 57583080551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66173015113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33086507571 + 33086507572.

It is an arithmetic number, because the mean of its divisors is an integer number (33086507572).

Almost surely, 2^66173015143 is an apocalyptic number.

66173015143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66173015143 is an equidigital number, since it uses as much as digits as its factorization.

66173015143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 66173015143 in words is "sixty-six billion, one hundred seventy-three million, fifteen thousand, one hundred forty-three".