12403103520 has 192 divisors, whose sum is σ = 40265092224. Its totient is φ = 3207290880.

The previous prime is 12403103497. The next prime is 12403103539. The reversal of 12403103520 is 2530130421.

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, 3402819 + ... + 3406461.

It is an arithmetic number, because the mean of its divisors is an integer number (209714022).

Almost surely, 2^12403103520 is an apocalyptic number.

12403103520 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 12403103520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20132546112).

12403103520 is an abundant number, since it is smaller than the sum of its proper divisors (27861988704).

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

12403103520 is a wasteful number, since it uses less digits than its factorization.

12403103520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875 (or 3867 counting only the distinct ones).

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

Adding to 12403103520 its reverse (2530130421), we get a palindrome (14933233941).

The spelling of 12403103520 in words is "twelve billion, four hundred three million, one hundred three thousand, five hundred twenty".