12478015344 has 40 divisors (see below), whose sum is σ = 33274711552. Its totient is φ = 4025165760.

The previous prime is 12478015343. The next prime is 12478015349. The reversal of 12478015344 is 44351087421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478015343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4191394 + ... + 4194369.

Almost surely, 2^12478015344 is an apocalyptic number.

It is an amenable number.

12478015344 is an abundant number, since it is smaller than the sum of its proper divisors (20796696208).

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

12478015344 is a wasteful number, since it uses less digits than its factorization.

12478015344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8385805 (or 8385799 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 12478015344 in words is "twelve billion, four hundred seventy-eight million, fifteen thousand, three hundred forty-four".