78805119578 has 32 divisors (see below), whose sum is σ = 120302361216. Its totient is φ = 38708990208.

The previous prime is 78805119563. The next prime is 78805119583. The reversal of 78805119578 is 87591150887.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67759625 + ... + 67760787.

It is an arithmetic number, because the mean of its divisors is an integer number (3759448788).

Almost surely, 2^78805119578 is an apocalyptic number.

78805119578 is a deficient number, since it is larger than the sum of its proper divisors (41497241638).

78805119578 is a wasteful number, since it uses less digits than its factorization.

78805119578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678.

The product of its (nonzero) digits is 5644800, while the sum is 59.

The spelling of 78805119578 in words is "seventy-eight billion, eight hundred five million, one hundred nineteen thousand, five hundred seventy-eight".