678382519682 has 24 divisors (see below), whose sum is σ = 1190248129980. Its totient is φ = 289129085280.

The previous prime is 678382519667. The next prime is 678382519721. The reversal of 678382519682 is 286915283876.

It can be written as a sum of positive squares in 2 ways, for example, as 437369272921 + 241013246761 = 661339^2 + 490931^2 .

It is a super-2 number, since 2×678382519682² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19104557 + ... + 19140032.

Almost surely, 2^678382519682 is an apocalyptic number.

678382519682 is a deficient number, since it is larger than the sum of its proper divisors (511865610298).

678382519682 is a wasteful number, since it uses less digits than its factorization.

678382519682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38244786 (or 38244779 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 65.

The spelling of 678382519682 in words is "six hundred seventy-eight billion, three hundred eighty-two million, five hundred nineteen thousand, six hundred eighty-two".