12181461560 has 16 divisors (see below), whose sum is σ = 27408288600. Its totient is φ = 4872584608.

The previous prime is 12181461527. The next prime is 12181461577. The reversal of 12181461560 is 6516418121.

It is a self number, because there is not a number n which added to its sum of digits gives 12181461560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152268230 + ... + 152268309.

Almost surely, 2^12181461560 is an apocalyptic number.

12181461560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12181461560 is an abundant number, since it is smaller than the sum of its proper divisors (15226827040).

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

12181461560 is a wasteful number, since it uses less digits than its factorization.

12181461560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304536550 (or 304536546 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

Adding to 12181461560 its reverse (6516418121), we get a palindrome (18697879681).

The spelling of 12181461560 in words is "twelve billion, one hundred eighty-one million, four hundred sixty-one thousand, five hundred sixty".