12885108355278 has 24 divisors (see below), whose sum is σ = 28000576725888. Its totient is φ = 4282291202112.

The previous prime is 12885108355271. The next prime is 12885108355307. The reversal of 12885108355278 is 87255380158821.

12885108355278 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 5 + 1 + 0 + 8 + 3 + 552 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12885108355271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062070126 + ... + 1062082257.

It is an arithmetic number, because the mean of its divisors is an integer number (1166690696912).

Almost surely, 2^{12885108355278} is an apocalyptic number.

12885108355278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12885108355278 is an abundant number, since it is smaller than the sum of its proper divisors (15115468370610).

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

12885108355278 is a wasteful number, since it uses less digits than its factorization.

12885108355278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124152728 (or 2124152725 counting only the distinct ones).

The product of its (nonzero) digits is 43008000, while the sum is 63.

The spelling of 12885108355278 in words is "twelve trillion, eight hundred eighty-five billion, one hundred eight million, three hundred fifty-five thousand, two hundred seventy-eight".