8778944498778 has 24 divisors (see below), whose sum is σ = 20022154120800. Its totient is φ = 2772298262664.

The previous prime is 8778944498777. The next prime is 8778944498801.

8778944498778 is a `hidden beast` number, since 8 + 7 + 7 + 8 + 9 + 44 + 498 + 7 + 78 = 666.

8778944498778 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (8778944498777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12834713838 + ... + 12834714521.

It is an arithmetic number, because the mean of its divisors is an integer number (834256421700).

Almost surely, 2^{8778944498778} is an apocalyptic number.

8778944498778 is an abundant number, since it is smaller than the sum of its proper divisors (11243209622022).

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

8778944498778 is a wasteful number, since it uses less digits than its factorization.

8778944498778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25669428386 (or 25669428383 counting only the distinct ones).

The product of its digits is 50982027264, while the sum is 90.

The spelling of 8778944498778 in words is "eight trillion, seven hundred seventy-eight billion, nine hundred forty-four million, four hundred ninety-eight thousand, seven hundred seventy-eight".