12545128050 has 384 divisors, whose sum is σ = 41277358080. Its totient is φ = 2448230400.

The previous prime is 12545128033. The next prime is 12545128091. The reversal of 12545128050 is 5082154521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9731806 + ... + 9733094.

It is an arithmetic number, because the mean of its divisors is an integer number (107493120).

Almost surely, 2^12545128050 is an apocalyptic number.

12545128050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12545128050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20638679040).

12545128050 is an abundant number, since it is smaller than the sum of its proper divisors (28732230030).

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

12545128050 is a wasteful number, since it uses less digits than its factorization.

12545128050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The spelling of 12545128050 in words is "twelve billion, five hundred forty-five million, one hundred twenty-eight thousand, fifty".