678245909542876 has 12 divisors (see below), whose sum is σ = 1201230707263272. Its totient is φ = 335037136039088.

The previous prime is 678245909542847. The next prime is 678245909542973.

678245909542876 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 678245909542876.

It is a congruent number.

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, 1021454682715 + ... + 1021454683378.

It is an arithmetic number, because the mean of its divisors is an integer number (100102558938606).

Almost surely, 2^{678245909542876} is an apocalyptic number.

It is an amenable number.

678245909542876 is a deficient number, since it is larger than the sum of its proper divisors (522984797720396).

678245909542876 is a wasteful number, since it uses less digits than its factorization.

678245909542876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042909366180 (or 2042909366178 counting only the distinct ones).

The product of its (nonzero) digits is 14631321600, while the sum is 82.

The spelling of 678245909542876 in words is "six hundred seventy-eight trillion, two hundred forty-five billion, nine hundred nine million, five hundred forty-two thousand, eight hundred seventy-six".