678936828639876 has 144 divisors (see below), whose sum is σ = 1707576233021568. Its totient is φ = 209231051581440.

The previous prime is 678936828639851. The next prime is 678936828639911.

678936828639876 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 574035825 + ... + 575217351.

It is an arithmetic number, because the mean of its divisors is an integer number (11858168284872).

Almost surely, 2^{678936828639876} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678936828639876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853788116510784).

678936828639876 is an abundant number, since it is smaller than the sum of its proper divisors (1028639404381692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678936828639876 is a wasteful number, since it uses less digits than its factorization.

678936828639876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182430 (or 1182367 counting only the distinct ones).

The product of its digits is 379243855872, while the sum is 96.

The spelling of 678936828639876 in words is "six hundred seventy-eight trillion, nine hundred thirty-six billion, eight hundred twenty-eight million, six hundred thirty-nine thousand, eight hundred seventy-six".