856654919108 has 6 divisors (see below), whose sum is σ = 1499146108446. Its totient is φ = 428327459552.

The previous prime is 856654919039. The next prime is 856654919123. The reversal of 856654919108 is 801919456658.

It can be written as a sum of positive squares in only one way, i.e., 784397178244 + 72257740864 = 885662^2 + 268808^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107081864885 + ... + 107081864892.

It is an arithmetic number, because the mean of its divisors is an integer number (249857684741).

Almost surely, 2^856654919108 is an apocalyptic number.

It is an amenable number.

856654919108 is a deficient number, since it is larger than the sum of its proper divisors (642491189338).

856654919108 is a wasteful number, since it uses less digits than its factorization.

856654919108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214163729781 (or 214163729779 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 62.

The spelling of 856654919108 in words is "eight hundred fifty-six billion, six hundred fifty-four million, nine hundred nineteen thousand, one hundred eight".