12523812178878 has 384 divisors, whose sum is σ = 37933862077440. Its totient is φ = 2957838301440.

The previous prime is 12523812178861. The next prime is 12523812178897. The reversal of 12523812178878 is 87887121832521.

12523812178878 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 381 + 2 + 178 + 87 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 242622600 + ... + 242674212.

It is an arithmetic number, because the mean of its divisors is an integer number (98786099160).

Almost surely, 2^{12523812178878} is an apocalyptic number.

12523812178878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12523812178878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18966931038720).

12523812178878 is an abundant number, since it is smaller than the sum of its proper divisors (25410049898562).

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

12523812178878 is a wasteful number, since it uses less digits than its factorization.

12523812178878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51789 (or 51716 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 63.

The spelling of 12523812178878 in words is "twelve trillion, five hundred twenty-three billion, eight hundred twelve million, one hundred seventy-eight thousand, eight hundred seventy-eight".