667367052126469 has 2 divisors, whose sum is σ = 667367052126470. Its totient is φ = 667367052126468.

The previous prime is 667367052126391. The next prime is 667367052126487. The reversal of 667367052126469 is 964621250763766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335213255968900 + 332153796157569 = 18308830^2 + 18225087^2 .

It is a cyclic number.

It is not a de Polignac number, because 667367052126469 - 2²⁷ = 667366917908741 is a prime.

It is a super-2 number, since 2×667367052126469² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 667367052126398 and 667367052126407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667367052126869) 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, 333683526063234 + 333683526063235.

It is an arithmetic number, because the mean of its divisors is an integer number (333683526063235).

Almost surely, 2^{667367052126469} is an apocalyptic number.

It is an amenable number.

667367052126469 is a deficient number, since it is larger than the sum of its proper divisors (1).

667367052126469 is an equidigital number, since it uses as much as digits as its factorization.

667367052126469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 823011840, while the sum is 70.

The spelling of 667367052126469 in words is "six hundred sixty-seven trillion, three hundred sixty-seven billion, fifty-two million, one hundred twenty-six thousand, four hundred sixty-nine".