12618405580 has 48 divisors (see below), whose sum is σ = 28993569696. Its totient is φ = 4574868480.

The previous prime is 12618405563. The next prime is 12618405607. The reversal of 12618405580 is 8550481621.

It is a happy number.

12618405580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12618405580³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10959 + ... + 159238.

It is an arithmetic number, because the mean of its divisors is an integer number (604032702).

Almost surely, 2^12618405580 is an apocalyptic number.

12618405580 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 12618405580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14496784848).

12618405580 is an abundant number, since it is smaller than the sum of its proper divisors (16375164116).

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

12618405580 is a wasteful number, since it uses less digits than its factorization.

12618405580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170554 (or 170552 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The spelling of 12618405580 in words is "twelve billion, six hundred eighteen million, four hundred five thousand, five hundred eighty".