778113678 has 16 divisors (see below), whose sum is σ = 1557913680. Its totient is φ = 259090176.

The previous prime is 778113659. The next prime is 778113683. The reversal of 778113678 is 876311877.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64225 + ... + 75372.

It is an arithmetic number, because the mean of its divisors is an integer number (97369605).

Almost surely, 2^778113678 is an apocalyptic number.

778113678 is an abundant number, since it is smaller than the sum of its proper divisors (779800002).

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

778113678 is a wasteful number, since it uses less digits than its factorization.

778113678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140531.

The product of its digits is 395136, while the sum is 48.

The square root of 778113678 is about 27894.6890644079. The cubic root of 778113678 is about 919.7737621081.

The spelling of 778113678 in words is "seven hundred seventy-eight million, one hundred thirteen thousand, six hundred seventy-eight".