12648357904 has 80 divisors (see below), whose sum is σ = 30242369920. Its totient is φ = 4990325760.

The previous prime is 12648357899. The next prime is 12648357913. The reversal of 12648357904 is 40975384621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540364 + ... + 563284.

It is an arithmetic number, because the mean of its divisors is an integer number (378029624).

It is a 1-persistent number, because it is pandigital, but 2⋅12648357904 = 25296715808 is not.

Almost surely, 2^12648357904 is an apocalyptic number.

12648357904 is a gapful number since it is divisible by the number (14) 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 12648357904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15121184960).

12648357904 is an abundant number, since it is smaller than the sum of its proper divisors (17594012016).

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

12648357904 is a wasteful number, since it uses less digits than its factorization.

12648357904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23328 (or 23322 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 12648357904 in words is "twelve billion, six hundred forty-eight million, three hundred fifty-seven thousand, nine hundred four".