12455220450 has 48 divisors (see below), whose sum is σ = 30900807936. Its totient is φ = 3320116800.

The previous prime is 12455220439. The next prime is 12455220509. The reversal of 12455220450 is 5402255421.

12455220450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 23 ways as a sum of consecutive naturals, for example, 414639 + ... + 443661.

It is an arithmetic number, because the mean of its divisors is an integer number (643766832).

Almost surely, 2^12455220450 is an apocalyptic number.

12455220450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12455220450 is an abundant number, since it is smaller than the sum of its proper divisors (18445587486).

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

12455220450 is a wasteful number, since it uses less digits than its factorization.

12455220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31899 (or 31894 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 12455220450 its reverse (5402255421), we get a palindrome (17857475871).

The spelling of 12455220450 in words is "twelve billion, four hundred fifty-five million, two hundred twenty thousand, four hundred fifty".