667503154315489 has 2 divisors, whose sum is σ = 667503154315490. Its totient is φ = 667503154315488.

The previous prime is 667503154315357. The next prime is 667503154315573. The reversal of 667503154315489 is 984513451305766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 597206801974225 + 70296352341264 = 24437815^2 + 8384292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667503154315489 is a prime.

It is a super-2 number, since 2×667503154315489² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667503154315889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333751577157744 + 333751577157745.

It is an arithmetic number, because the mean of its divisors is an integer number (333751577157745).

Almost surely, 2^{667503154315489} is an apocalyptic number.

It is an amenable number.

667503154315489 is a deficient number, since it is larger than the sum of its proper divisors (1).

667503154315489 is an equidigital number, since it uses as much as digits as its factorization.

667503154315489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592000, while the sum is 67.

The spelling of 667503154315489 in words is "six hundred sixty-seven trillion, five hundred three billion, one hundred fifty-four million, three hundred fifteen thousand, four hundred eighty-nine".