12001523430 has 64 divisors (see below), whose sum is σ = 31129217280. Its totient is φ = 2943755136.

The previous prime is 12001523407. The next prime is 12001523459. The reversal of 12001523430 is 3432510021.

It is a junction number, because it is equal to n+sod(n) for n = 12001523397 and 12001523406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56001 + ... + 164739.

It is an arithmetic number, because the mean of its divisors is an integer number (486394020).

Almost surely, 2^12001523430 is an apocalyptic number.

12001523430 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 12001523430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15564608640).

12001523430 is an abundant number, since it is smaller than the sum of its proper divisors (19127693850).

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

12001523430 is a wasteful number, since it uses less digits than its factorization.

12001523430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109045.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 12001523430 in words is "twelve billion, one million, five hundred twenty-three thousand, four hundred thirty".