12478818146 has 16 divisors (see below), whose sum is σ = 19405189440. Its totient is φ = 6011344080.

The previous prime is 12478818113. The next prime is 12478818161. The reversal of 12478818146 is 64181887421.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12478818094 and 12478818103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203270 + ... + 257441.

It is an arithmetic number, because the mean of its divisors is an integer number (1212824340).

Almost surely, 2^12478818146 is an apocalyptic number.

12478818146 is a deficient number, since it is larger than the sum of its proper divisors (6926371294).

12478818146 is a wasteful number, since it uses less digits than its factorization.

12478818146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461209.

The product of its digits is 688128, while the sum is 50.

The spelling of 12478818146 in words is "twelve billion, four hundred seventy-eight million, eight hundred eighteen thousand, one hundred forty-six".