6478701708686 has 16 divisors (see below), whose sum is σ = 9955213344720. Its totient is φ = 3160299405120.

The previous prime is 6478701708659. The next prime is 6478701708769. The reversal of 6478701708686 is 6868071078746.

It is a happy number.

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, 6029945 + ... + 7022651.

It is an arithmetic number, because the mean of its divisors is an integer number (622200834045).

Almost surely, 2^{6478701708686} is an apocalyptic number.

6478701708686 is a deficient number, since it is larger than the sum of its proper divisors (3476511636034).

6478701708686 is a wasteful number, since it uses less digits than its factorization.

6478701708686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072339.

The product of its (nonzero) digits is 151732224, while the sum is 68.

The spelling of 6478701708686 in words is "six trillion, four hundred seventy-eight billion, seven hundred one million, seven hundred eight thousand, six hundred eighty-six".