12828415878 has 16 divisors (see below), whose sum is σ = 28507590960. Its totient is φ = 4276138608.

The previous prime is 12828415867. The next prime is 12828415931. The reversal of 12828415878 is 87851482821.

It is a happy number.

12828415878 is a `hidden beast` number, since 12 + 8 + 2 + 8 + 41 + 587 + 8 = 666.

12828415878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12828415878³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 237563257 = 12828415878 / (1 + 2 + 8 + 2 + 8 + 4 + 1 + 5 + 8 + 7 + 8).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 118781575 + ... + 118781682.

It is an arithmetic number, because the mean of its divisors is an integer number (1781724435).

Almost surely, 2^12828415878 is an apocalyptic number.

12828415878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12828415878 is an abundant number, since it is smaller than the sum of its proper divisors (15679175082).

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

12828415878 is a wasteful number, since it uses less digits than its factorization.

12828415878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237563268 (or 237563262 counting only the distinct ones).

The product of its digits is 2293760, while the sum is 54.

The spelling of 12828415878 in words is "twelve billion, eight hundred twenty-eight million, four hundred fifteen thousand, eight hundred seventy-eight".