675667444766641 has 2 divisors, whose sum is σ = 675667444766642. Its totient is φ = 675667444766640.

The previous prime is 675667444766551. The next prime is 675667444766701. The reversal of 675667444766641 is 146667444766576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668723877212416 + 6943567554225 = 25859696^2 + 2635065^2 .

It is a cyclic number.

It is not a de Polignac number, because 675667444766641 - 2⁹ = 675667444766129 is a prime.

It is not a weakly prime, because it can be changed into another prime (675667444766341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337833722383320 + 337833722383321.

It is an arithmetic number, because the mean of its divisors is an integer number (337833722383321).

Almost surely, 2^{675667444766641} is an apocalyptic number.

It is an amenable number.

675667444766641 is a deficient number, since it is larger than the sum of its proper divisors (1).

675667444766641 is an equidigital number, since it uses as much as digits as its factorization.

675667444766641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20483850240, while the sum is 79.

The spelling of 675667444766641 in words is "six hundred seventy-five trillion, six hundred sixty-seven billion, four hundred forty-four million, seven hundred sixty-six thousand, six hundred forty-one".