667473063517018 has 96 divisors (see below), whose sum is σ = 1167768597053520. Its totient is φ = 284930393088000.

The previous prime is 667473063516947. The next prime is 667473063517067. The reversal of 667473063517018 is 810715360374766.

667473063517018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 464557112566569 + 202915950950449 = 21553587^2 + 14244857^2 .

It is a super-2 number, since 2×667473063517018² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5788903968 + ... + 5789019268.

Almost surely, 2^{667473063517018} is an apocalyptic number.

667473063517018 is a deficient number, since it is larger than the sum of its proper divisors (500295533536502).

667473063517018 is a wasteful number, since it uses less digits than its factorization.

667473063517018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118384 (or 118373 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 64.

The spelling of 667473063517018 in words is "six hundred sixty-seven trillion, four hundred seventy-three billion, sixty-three million, five hundred seventeen thousand, eighteen".