12603535000 has 160 divisors (see below), whose sum is σ = 34442100000. Its totient is φ = 4320624000.

The previous prime is 12603534989. The next prime is 12603535003. The reversal of 12603535000 is 53530621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12603535003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1711326 + ... + 1718674.

It is an arithmetic number, because the mean of its divisors is an integer number (215263125).

Almost surely, 2^12603535000 is an apocalyptic number.

12603535000 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 12603535000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17221050000).

12603535000 is an abundant number, since it is smaller than the sum of its proper divisors (21838565000).

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

12603535000 is an frugal number, since it uses more digits than its factorization.

12603535000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7396 (or 7363 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 12603535000 in words is "twelve billion, six hundred three million, five hundred thirty-five thousand".