12421887504 has 120 divisors (see below), whose sum is σ = 34889225280. Its totient is φ = 3785865216.

The previous prime is 12421887503. The next prime is 12421887523. The reversal of 12421887504 is 40578812421.

It is not an unprimeable number, because it can be changed into a prime (12421887503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7967077 + ... + 7968635.

It is an arithmetic number, because the mean of its divisors is an integer number (290743544).

Almost surely, 2^12421887504 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 12421887504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17444612640).

12421887504 is an abundant number, since it is smaller than the sum of its proper divisors (22467337776).

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

12421887504 is a wasteful number, since it uses less digits than its factorization.

12421887504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 12421887504 in words is "twelve billion, four hundred twenty-one million, eight hundred eighty-seven thousand, five hundred four".