678227173136 has 10 divisors (see below), whose sum is σ = 1314065147982. Its totient is φ = 339113586560.

The previous prime is 678227173121. The next prime is 678227173153. The reversal of 678227173136 is 631371722876.

It can be written as a sum of positive squares in only one way, i.e., 565720596736 + 112506576400 = 752144^2 + 335420^2 .

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 as a sum of consecutive naturals, namely, 21194599145 + ... + 21194599176.

Almost surely, 2^678227173136 is an apocalyptic number.

It is an amenable number.

678227173136 is a deficient number, since it is larger than the sum of its proper divisors (635837974846).

678227173136 is a wasteful number, since it uses less digits than its factorization.

678227173136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42389198329 (or 42389198323 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 53.

The spelling of 678227173136 in words is "six hundred seventy-eight billion, two hundred twenty-seven million, one hundred seventy-three thousand, one hundred thirty-six".