12003513500 has 96 divisors (see below), whose sum is σ = 28783145664. Its totient is φ = 4336800000.

The previous prime is 12003513499. The next prime is 12003513521. The reversal of 12003513500 is 531530021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856550 + ... + 870450.

It is an arithmetic number, because the mean of its divisors is an integer number (299824434).

Almost surely, 2^12003513500 is an apocalyptic number.

12003513500 is a gapful number since it is divisible by the number (10) 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 12003513500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14391572832).

12003513500 is an abundant number, since it is smaller than the sum of its proper divisors (16779632164).

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

12003513500 is a wasteful number, since it uses less digits than its factorization.

12003513500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14088 (or 14076 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The spelling of 12003513500 in words is "twelve billion, three million, five hundred thirteen thousand, five hundred".