6348439687678 has 16 divisors (see below), whose sum is σ = 10483661873520. Its totient is φ = 2859180508800.

The previous prime is 6348439687663. The next prime is 6348439687721. The reversal of 6348439687678 is 8767869348436.

It is a junction number, because it is equal to n+sod(n) for n = 6348439687598 and 6348439687607.

It is a congruent number.

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, 1323692283 + ... + 1323697078.

It is an arithmetic number, because the mean of its divisors is an integer number (655228867095).

Almost surely, 2^{6348439687678} is an apocalyptic number.

6348439687678 is a deficient number, since it is larger than the sum of its proper divisors (4135222185842).

6348439687678 is a wasteful number, since it uses less digits than its factorization.

6348439687678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647389483.

The product of its digits is 7023034368, while the sum is 79.

The spelling of 6348439687678 in words is "six trillion, three hundred forty-eight billion, four hundred thirty-nine million, six hundred eighty-seven thousand, six hundred seventy-eight".