12394758528 has 192 divisors, whose sum is σ = 37671129600. Its totient is φ = 3900939264.

The previous prime is 12394758517. The next prime is 12394758533. The reversal of 12394758528 is 82585749321.

12394758528 is a `hidden beast` number, since 1 + 2 + 39 + 4 + 7 + 585 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8032125 + ... + 8033667.

It is an arithmetic number, because the mean of its divisors is an integer number (196203800).

Almost surely, 2^12394758528 is an apocalyptic number.

12394758528 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 12394758528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18835564800).

12394758528 is an abundant number, since it is smaller than the sum of its proper divisors (25276371072).

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

12394758528 is a wasteful number, since it uses less digits than its factorization.

12394758528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1934 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 12394758528 in words is "twelve billion, three hundred ninety-four million, seven hundred fifty-eight thousand, five hundred twenty-eight".