12061003520 has 72 divisors (see below), whose sum is σ = 28953170064. Its totient is φ = 4813832192.

The previous prime is 12061003501. The next prime is 12061003523. The reversal of 12061003520 is 2530016021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12061003492 and 12061003501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12061003523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587672 + ... + 607848.

It is an arithmetic number, because the mean of its divisors is an integer number (402127362).

Almost surely, 2^12061003520 is an apocalyptic number.

12061003520 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 12061003520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14476585032).

12061003520 is an abundant number, since it is smaller than the sum of its proper divisors (16892166544).

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

12061003520 is an equidigital number, since it uses as much as digits as its factorization.

12061003520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20665 (or 20651 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12061003520 its reverse (2530016021), we get a palindrome (14591019541).

The spelling of 12061003520 in words is "twelve billion, sixty-one million, three thousand, five hundred twenty".