12478890447 has 12 divisors (see below), whose sum is σ = 18030398880. Its totient is φ = 8316798048.

The previous prime is 12478890427. The next prime is 12478890451. The reversal of 12478890447 is 74409887421.

12478890447 is a `hidden beast` number, since 124 + 78 + 8 + 9 + 0 + 447 = 666.

It is not a de Polignac number, because 12478890447 - 2⁶ = 12478890383 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12478890393 and 12478890402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478890427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172822 + ... + 234147.

It is an arithmetic number, because the mean of its divisors is an integer number (1502533240).

Almost surely, 2^12478890447 is an apocalyptic number.

12478890447 is a deficient number, since it is larger than the sum of its proper divisors (5551508433).

12478890447 is a wasteful number, since it uses less digits than its factorization.

12478890447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410382 (or 410379 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 12478890447 in words is "twelve billion, four hundred seventy-eight million, eight hundred ninety thousand, four hundred forty-seven".