12478638744 has 384 divisors, whose sum is σ = 41098337280. Its totient is φ = 3370291200.

The previous prime is 12478638737. The next prime is 12478638749. The reversal of 12478638744 is 44783687421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478638749) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51778464 + ... + 51778704.

It is an arithmetic number, because the mean of its divisors is an integer number (107026920).

Almost surely, 2^12478638744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12478638744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20549168640).

12478638744 is an abundant number, since it is smaller than the sum of its proper divisors (28619698536).

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

12478638744 is a wasteful number, since it uses less digits than its factorization.

12478638744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 424 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 54.

The spelling of 12478638744 in words is "twelve billion, four hundred seventy-eight million, six hundred thirty-eight thousand, seven hundred forty-four".