12145563232 has 96 divisors (see below), whose sum is σ = 27665608320. Its totient is φ = 5187348480.

The previous prime is 12145563229. The next prime is 12145563281. The reversal of 12145563232 is 23236554121.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4708119 + ... + 4710697.

It is an arithmetic number, because the mean of its divisors is an integer number (288183420).

Almost surely, 2^12145563232 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 12145563232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13832804160).

12145563232 is an abundant number, since it is smaller than the sum of its proper divisors (15520045088).

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

12145563232 is a wasteful number, since it uses less digits than its factorization.

12145563232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3396 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The spelling of 12145563232 in words is "twelve billion, one hundred forty-five million, five hundred sixty-three thousand, two hundred thirty-two".