5666639655167 has 2 divisors, whose sum is σ = 5666639655168. Its totient is φ = 5666639655166.

The previous prime is 5666639655121. The next prime is 5666639655227. The reversal of 5666639655167 is 7615569366665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5666639655167 - 2⁸ = 5666639654911 is a prime.

It is a super-2 number, since 2×5666639655167² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5666639655167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666639855167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833319827583 + 2833319827584.

It is an arithmetic number, because the mean of its divisors is an integer number (2833319827584).

Almost surely, 2^{5666639655167} is an apocalyptic number.

5666639655167 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666639655167 is an equidigital number, since it uses as much as digits as its factorization.

5666639655167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248000, while the sum is 71.

The spelling of 5666639655167 in words is "five trillion, six hundred sixty-six billion, six hundred thirty-nine million, six hundred fifty-five thousand, one hundred sixty-seven".