12154385448 has 128 divisors (see below), whose sum is σ = 34763068800. Its totient is φ = 3931918848.

The previous prime is 12154385423. The next prime is 12154385449. The reversal of 12154385448 is 84458345121.

12154385448 is a `hidden beast` number, since 1 + 21 + 54 + 38 + 544 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (12154385449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3538740 + ... + 3542172.

It is an arithmetic number, because the mean of its divisors is an integer number (271586475).

Almost surely, 2^12154385448 is an apocalyptic number.

12154385448 is a gapful number since it is divisible by the number (18) 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 12154385448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17381534400).

12154385448 is an abundant number, since it is smaller than the sum of its proper divisors (22608683352).

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

12154385448 is a wasteful number, since it uses less digits than its factorization.

12154385448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928 (or 3918 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The spelling of 12154385448 in words is "twelve billion, one hundred fifty-four million, three hundred eighty-five thousand, four hundred forty-eight".