686168332378 has 8 divisors (see below), whose sum is σ = 1034641255680. Its totient is φ = 341287913820.

The previous prime is 686168332363. The next prime is 686168332393. The reversal of 686168332378 is 873233861686.

It is an interprime number because it is at equal distance from previous prime (686168332363) and next prime (686168332393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898125708 + ... + 898126471.

It is an arithmetic number, because the mean of its divisors is an integer number (129330156960).

Almost surely, 2^686168332378 is an apocalyptic number.

686168332378 is a deficient number, since it is larger than the sum of its proper divisors (348472923302).

686168332378 is a wasteful number, since it uses less digits than its factorization.

686168332378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796252372.

The product of its digits is 41803776, while the sum is 61.

The spelling of 686168332378 in words is "six hundred eighty-six billion, one hundred sixty-eight million, three hundred thirty-two thousand, three hundred seventy-eight".