678944511724 has 12 divisors (see below), whose sum is σ = 1189760685400. Its totient is φ = 339012887328.

The previous prime is 678944511689. The next prime is 678944511727. The reversal of 678944511724 is 427115449876.

It is not an unprimeable number, because it can be changed into a prime (678944511727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114838809 + ... + 114844720.

Almost surely, 2^678944511724 is an apocalyptic number.

It is an amenable number.

678944511724 is a deficient number, since it is larger than the sum of its proper divisors (510816173676).

678944511724 is a wasteful number, since it uses less digits than its factorization.

678944511724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229684272 (or 229684270 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The spelling of 678944511724 in words is "six hundred seventy-eight billion, nine hundred forty-four million, five hundred eleven thousand, seven hundred twenty-four".