667370669993 has 2 divisors, whose sum is σ = 667370669994. Its totient is φ = 667370669992.

The previous prime is 667370669989. The next prime is 667370670013. The reversal of 667370669993 is 399966073766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653078945689 + 14291724304 = 808133^2 + 119548^2 .

It is a cyclic number.

It is not a de Polignac number, because 667370669993 - 2² = 667370669989 is a prime.

It is a super-2 number, since 2×667370669993² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667370669293) 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, 333685334996 + 333685334997.

It is an arithmetic number, because the mean of its divisors is an integer number (333685334997).

Almost surely, 2^667370669993 is an apocalyptic number.

It is an amenable number.

667370669993 is a deficient number, since it is larger than the sum of its proper divisors (1).

667370669993 is an equidigital number, since it uses as much as digits as its factorization.

667370669993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 416649744, while the sum is 71.

The spelling of 667370669993 in words is "six hundred sixty-seven billion, three hundred seventy million, six hundred sixty-nine thousand, nine hundred ninety-three".