12080876138478 has 144 divisors (see below), whose sum is σ = 30701509128576. Its totient is φ = 3423059771040.

The previous prime is 12080876138449. The next prime is 12080876138531. The reversal of 12080876138478 is 87483167808021.

12080876138478 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 0 + 8 + 7 + 613 + 8 + 4 + 7 + 8 = 666.

It is a super-2 number, since 2×12080876138478² (a number of 27 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 178247425 + ... + 178315187.

It is an arithmetic number, because the mean of its divisors is an integer number (213204924504).

Almost surely, 2^{12080876138478} is an apocalyptic number.

12080876138478 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 12080876138478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15350754564288).

12080876138478 is an abundant number, since it is smaller than the sum of its proper divisors (18620632990098).

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

12080876138478 is a wasteful number, since it uses less digits than its factorization.

12080876138478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69459 (or 69449 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 12080876138478 in words is "twelve trillion, eighty billion, eight hundred seventy-six million, one hundred thirty-eight thousand, four hundred seventy-eight".