12445152420 has 96 divisors (see below), whose sum is σ = 35482220928. Its totient is φ = 3258565632.

The previous prime is 12445152331. The next prime is 12445152449. The reversal of 12445152420 is 2425154421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988002 + ... + 1000518.

It is an arithmetic number, because the mean of its divisors is an integer number (369606468).

Almost surely, 2^12445152420 is an apocalyptic number.

12445152420 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 12445152420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17741110464).

12445152420 is an abundant number, since it is smaller than the sum of its proper divisors (23037068508).

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

12445152420 is a wasteful number, since it uses less digits than its factorization.

12445152420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829 (or 12827 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

12445152420 divided by its sum of digits (30) gives a palindrome (414838414).

The spelling of 12445152420 in words is "twelve billion, four hundred forty-five million, one hundred fifty-two thousand, four hundred twenty".