667473434025345 has 80 divisors (see below), whose sum is σ = 1211261874020352. Its totient is φ = 351598625026560.

The previous prime is 667473434025331. The next prime is 667473434025347. The reversal of 667473434025345 is 543520434374766.

667473434025345 is a `hidden beast` number, since 6 + 6 + 7 + 4 + 7 + 34 + 340 + 253 + 4 + 5 = 666.

It is not a de Polignac number, because 667473434025345 - 2⁴ = 667473434025329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667473434025347) 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 in 79 ways as a sum of consecutive naturals, for example, 117671625 + ... + 123213465.

Almost surely, 2^{667473434025345} is an apocalyptic number.

It is an amenable number.

667473434025345 is a deficient number, since it is larger than the sum of its proper divisors (543788439995007).

667473434025345 is a wasteful number, since it uses less digits than its factorization.

667473434025345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545524 (or 5545515 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 63.

The spelling of 667473434025345 in words is "six hundred sixty-seven trillion, four hundred seventy-three billion, four hundred thirty-four million, twenty-five thousand, three hundred forty-five".