678459113502 has 16 divisors (see below), whose sum is σ = 1376029752192. Its totient is φ = 222967783640.

The previous prime is 678459113471. The next prime is 678459113513. The reversal of 678459113502 is 205311954876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796313088 + ... + 796313939.

It is an arithmetic number, because the mean of its divisors is an integer number (86001859512).

It is a 2-persistent number, because it is pandigital, and so is 2⋅678459113502 = 1356918227004, but 3⋅678459113502 = 2035377340506 is not.

Almost surely, 2^678459113502 is an apocalyptic number.

678459113502 is an abundant number, since it is smaller than the sum of its proper divisors (697570638690).

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

678459113502 is a wasteful number, since it uses less digits than its factorization.

678459113502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592627103.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 678459113502 in words is "six hundred seventy-eight billion, four hundred fifty-nine million, one hundred thirteen thousand, five hundred two".