667853358766 has 24 divisors (see below), whose sum is σ = 1101183836760. Its totient is φ = 303554900880.

The previous prime is 667853358703. The next prime is 667853358779.

667853358766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 667853358695 and 667853358704.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6050725 + ... + 6160111.

It is an arithmetic number, because the mean of its divisors is an integer number (45882659865).

Almost surely, 2^667853358766 is an apocalyptic number.

667853358766 is a deficient number, since it is larger than the sum of its proper divisors (433330477994).

667853358766 is a wasteful number, since it uses less digits than its factorization.

667853358766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134640 (or 134629 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 70.

The spelling of 667853358766 in words is "six hundred sixty-seven billion, eight hundred fifty-three million, three hundred fifty-eight thousand, seven hundred sixty-six".