12003502530 has 96 divisors (see below), whose sum is σ = 29684225088. Its totient is φ = 3105648000.

The previous prime is 12003502523. The next prime is 12003502543. The reversal of 12003502530 is 3520530021.

It is a junction number, because it is equal to n+sod(n) for n = 12003502497 and 12003502506.

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 47 ways as a sum of consecutive naturals, for example, 11420505 + ... + 11421555.

It is an arithmetic number, because the mean of its divisors is an integer number (309210678).

Almost surely, 2^12003502530 is an apocalyptic number.

12003502530 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 12003502530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14842112544).

12003502530 is an abundant number, since it is smaller than the sum of its proper divisors (17680722558).

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

12003502530 is a wasteful number, since it uses less digits than its factorization.

12003502530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The spelling of 12003502530 in words is "twelve billion, three million, five hundred two thousand, five hundred thirty".