6578780878 has 16 divisors (see below), whose sum is σ = 10326047616. Its totient is φ = 3139672320.

The previous prime is 6578780843. The next prime is 6578780917. The reversal of 6578780878 is 8780878756.

It is a happy number.

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, 722251 + ... + 731302.

It is an arithmetic number, because the mean of its divisors is an integer number (645377976).

Almost surely, 2^6578780878 is an apocalyptic number.

6578780878 is a deficient number, since it is larger than the sum of its proper divisors (3747266738).

6578780878 is a wasteful number, since it uses less digits than its factorization.

6578780878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453659.

The product of its (nonzero) digits is 42147840, while the sum is 64.

The square root of 6578780878 is about 81109.6842430052. The cubic root of 6578780878 is about 1873.7650774821.

The spelling of 6578780878 in words is "six billion, five hundred seventy-eight million, seven hundred eighty thousand, eight hundred seventy-eight".