667417864147 has 2 divisors, whose sum is σ = 667417864148. Its totient is φ = 667417864146.

The previous prime is 667417864123. The next prime is 667417864159. The reversal of 667417864147 is 741468714766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667417864147 - 2¹⁹ = 667417339859 is a prime.

It is not a weakly prime, because it can be changed into another prime (667417864177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333708932073 + 333708932074.

It is an arithmetic number, because the mean of its divisors is an integer number (333708932074).

Almost surely, 2^667417864147 is an apocalyptic number.

667417864147 is a deficient number, since it is larger than the sum of its proper divisors (1).

667417864147 is an equidigital number, since it uses as much as digits as its factorization.

667417864147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37933056, while the sum is 61.

The spelling of 667417864147 in words is "six hundred sixty-seven billion, four hundred seventeen million, eight hundred sixty-four thousand, one hundred forty-seven".