13530325020 has 96 divisors (see below), whose sum is σ = 38977409856. Its totient is φ = 3504384000.

The previous prime is 13530325019. The next prime is 13530325021. The reversal of 13530325020 is 2052303531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13530325019) and next prime (13530325021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530325021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1329150 + ... + 1339290.

It is an arithmetic number, because the mean of its divisors is an integer number (406014686).

Almost surely, 2^13530325020 is an apocalyptic number.

13530325020 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 13530325020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19488704928).

13530325020 is an abundant number, since it is smaller than the sum of its proper divisors (25447084836).

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

13530325020 is a wasteful number, since it uses less digits than its factorization.

13530325020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791 (or 10789 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 13530325020 its reverse (2052303531), we get a palindrome (15582628551).

The spelling of 13530325020 in words is "thirteen billion, five hundred thirty million, three hundred twenty-five thousand, twenty".