8778042408778 has 16 divisors (see below), whose sum is σ = 13297560344136. Its totient is φ = 4345523142400.

The previous prime is 8778042408761. The next prime is 8778042408781.

8778042408778 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 7547014435489 + 1231027973289 = 2747183^2 + 1109517^2 .

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, 34875750 + ... + 35126542.

Almost surely, 2^{8778042408778} is an apocalyptic number.

8778042408778 is a deficient number, since it is larger than the sum of its proper divisors (4519517935358).

8778042408778 is a wasteful number, since it uses less digits than its factorization.

8778042408778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424169.

The product of its (nonzero) digits is 314703872, while the sum is 70.

The spelling of 8778042408778 in words is "eight trillion, seven hundred seventy-eight billion, forty-two million, four hundred eight thousand, seven hundred seventy-eight".