12169580544 has 156 divisors (see below), whose sum is σ = 38349213552. Its totient is φ = 3687628800.

The previous prime is 12169580519. The next prime is 12169580551. The reversal of 12169580544 is 44508596121.

12169580544 is a `hidden beast` number, since 1 + 2 + 1 + 69 + 580 + 5 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12169580544.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390499 + ... + 420509.

It is an arithmetic number, because the mean of its divisors is an integer number (245828292).

Almost surely, 2^12169580544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12169580544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19174606776).

12169580544 is an abundant number, since it is smaller than the sum of its proper divisors (26179633008).

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

12169580544 is a wasteful number, since it uses less digits than its factorization.

12169580544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30052 (or 30027 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 12169580544 in words is "twelve billion, one hundred sixty-nine million, five hundred eighty thousand, five hundred forty-four".