667182645617 has 2 divisors, whose sum is σ = 667182645618. Its totient is φ = 667182645616.

The previous prime is 667182645611. The next prime is 667182645629. The reversal of 667182645617 is 716546281766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426456017296 + 240726628321 = 653036^2 + 490639^2 .

It is a cyclic number.

It is not a de Polignac number, because 667182645617 - 2⁸ = 667182645361 is a prime.

It is a super-2 number, since 2×667182645617² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667182645611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333591322808 + 333591322809.

It is an arithmetic number, because the mean of its divisors is an integer number (333591322809).

Almost surely, 2^667182645617 is an apocalyptic number.

It is an amenable number.

667182645617 is a deficient number, since it is larger than the sum of its proper divisors (1).

667182645617 is an equidigital number, since it uses as much as digits as its factorization.

667182645617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 59.

The spelling of 667182645617 in words is "six hundred sixty-seven billion, one hundred eighty-two million, six hundred forty-five thousand, six hundred seventeen".