12708305478 has 192 divisors, whose sum is σ = 31834902528. Its totient is φ = 3659040000.

The previous prime is 12708305453. The next prime is 12708305479. The reversal of 12708305478 is 87450380721.

12708305478 is a `hidden beast` number, since 1 + 2 + 70 + 8 + 30 + 547 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12708305479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52731438 + ... + 52731678.

It is an arithmetic number, because the mean of its divisors is an integer number (165806784).

Almost surely, 2^12708305478 is an apocalyptic number.

12708305478 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 12708305478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15917451264).

12708305478 is an abundant number, since it is smaller than the sum of its proper divisors (19126597050).

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

12708305478 is a wasteful number, since it uses less digits than its factorization.

12708305478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 12708305478 in words is "twelve billion, seven hundred eight million, three hundred five thousand, four hundred seventy-eight".