678454894084 has 24 divisors (see below), whose sum is σ = 1296056666016. Its totient is φ = 308192256000.

The previous prime is 678454894049. The next prime is 678454894097. The reversal of 678454894084 is 480498454876.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4838397 + ... + 4976644.

It is an arithmetic number, because the mean of its divisors is an integer number (54002361084).

Almost surely, 2^678454894084 is an apocalyptic number.

It is an amenable number.

678454894084 is a deficient number, since it is larger than the sum of its proper divisors (617601771932).

678454894084 is a wasteful number, since it uses less digits than its factorization.

678454894084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9816627 (or 9816625 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 67.

The spelling of 678454894084 in words is "six hundred seventy-eight billion, four hundred fifty-four million, eight hundred ninety-four thousand, eighty-four".