12478117608 has 256 divisors, whose sum is σ = 40656384000. Its totient is φ = 3505420800.

The previous prime is 12478117601. The next prime is 12478117609. The reversal of 12478117608 is 80671187421.

12478117608 is a `hidden beast` number, since 1 + 2 + 478 + 1 + 176 + 0 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (12478117601) 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 63 ways as a sum of consecutive naturals, for example, 2118828 + ... + 2124708.

It is an arithmetic number, because the mean of its divisors is an integer number (158814000).

Almost surely, 2^12478117608 is an apocalyptic number.

12478117608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12478117608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20328192000).

12478117608 is an abundant number, since it is smaller than the sum of its proper divisors (28178266392).

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

12478117608 is a wasteful number, since it uses less digits than its factorization.

12478117608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973 (or 5963 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 12478117608 in words is "twelve billion, four hundred seventy-eight million, one hundred seventeen thousand, six hundred eight".