12361260520 has 128 divisors (see below), whose sum is σ = 32265216000. Its totient is φ = 4174765056.

The previous prime is 12361260511. The next prime is 12361260557. The reversal of 12361260520 is 2506216321.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 5297274 + ... + 5299606.

It is an arithmetic number, because the mean of its divisors is an integer number (252072000).

Almost surely, 2^12361260520 is an apocalyptic number.

12361260520 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 12361260520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16132608000).

12361260520 is an abundant number, since it is smaller than the sum of its proper divisors (19903955480).

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

12361260520 is a wasteful number, since it uses less digits than its factorization.

12361260520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12361260520 its reverse (2506216321), we get a palindrome (14867476841).

The spelling of 12361260520 in words is "twelve billion, three hundred sixty-one million, two hundred sixty thousand, five hundred twenty".