13033400500 has 48 divisors (see below), whose sum is σ = 28583322768. Its totient is φ = 5191680000.

The previous prime is 13033400449. The next prime is 13033400503. The reversal of 13033400500 is 500433031.

It can be written as a sum of positive squares in 8 ways, for example, as 1340438544 + 11692961956 = 36612^2 + 108134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033400503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66420 + ... + 174580.

It is an arithmetic number, because the mean of its divisors is an integer number (595485891).

Almost surely, 2^13033400500 is an apocalyptic number.

13033400500 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 13033400500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14291661384).

13033400500 is an abundant number, since it is smaller than the sum of its proper divisors (15549922268).

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

13033400500 is a wasteful number, since it uses less digits than its factorization.

13033400500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108421 (or 108409 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

Adding to 13033400500 its reverse (500433031), we get a palindrome (13533833531).

The spelling of 13033400500 in words is "thirteen billion, thirty-three million, four hundred thousand, five hundred".