13335012500 has 72 divisors (see below), whose sum is σ = 30884757624. Its totient is φ = 5020160000.

The previous prime is 13335012469. The next prime is 13335012503. The reversal of 13335012500 is 521053331.

It can be written as a sum of positive squares in 12 ways, for example, as 12796586884 + 538425616 = 113122^2 + 23204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13335012503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181124 + ... + 243876.

It is an arithmetic number, because the mean of its divisors is an integer number (428954967).

Almost surely, 2^13335012500 is an apocalyptic number.

13335012500 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 13335012500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15442378812).

13335012500 is an abundant number, since it is smaller than the sum of its proper divisors (17549745124).

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

13335012500 is an equidigital number, since it uses as much as digits as its factorization.

13335012500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62799 (or 62777 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 13335012500 its reverse (521053331), we get a palindrome (13856065831).

The spelling of 13335012500 in words is "thirteen billion, three hundred thirty-five million, twelve thousand, five hundred".