13251013032540 has 96 divisors (see below), whose sum is σ = 38010000188160. Its totient is φ = 3447398739456.

The previous prime is 13251013032533. The next prime is 13251013032617. The reversal of 13251013032540 is 4523031015231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13251013032498 and 13251013032507.

It is a congruent number.

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, 785470 + ... + 5207589.

It is an arithmetic number, because the mean of its divisors is an integer number (395937501960).

Almost surely, 2^{13251013032540} is an apocalyptic number.

13251013032540 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 13251013032540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19005000094080).

13251013032540 is an abundant number, since it is smaller than the sum of its proper divisors (24758987155620).

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

13251013032540 is a wasteful number, since it uses less digits than its factorization.

13251013032540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993971 (or 5993969 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 13251013032540 its reverse (4523031015231), we get a palindrome (17774044047771).

The spelling of 13251013032540 in words is "thirteen trillion, two hundred fifty-one billion, thirteen million, thirty-two thousand, five hundred forty".