6664554035173 has 2 divisors, whose sum is σ = 6664554035174. Its totient is φ = 6664554035172.

The previous prime is 6664554035143. The next prime is 6664554035177. The reversal of 6664554035173 is 3715304554666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3747778502724 + 2916775532449 = 1935918^2 + 1707857^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664554035173 - 2⁵ = 6664554035141 is a prime.

It is a super-2 number, since 2×6664554035173² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664554035177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332277017586 + 3332277017587.

It is an arithmetic number, because the mean of its divisors is an integer number (3332277017587).

Almost surely, 2^{6664554035173} is an apocalyptic number.

It is an amenable number.

6664554035173 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664554035173 is an equidigital number, since it uses as much as digits as its factorization.

6664554035173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216000, while the sum is 55.

The spelling of 6664554035173 in words is "six trillion, six hundred sixty-four billion, five hundred fifty-four million, thirty-five thousand, one hundred seventy-three".