12453312020 has 24 divisors (see below), whose sum is σ = 26421567144. Its totient is φ = 4929970176.

The previous prime is 12453312017. The next prime is 12453312029. The reversal of 12453312020 is 2021335421.

It can be written as a sum of positive squares in 4 ways, for example, as 30426256 + 12422885764 = 5516^2 + 111458^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453312029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207677 + ... + 3211556.

It is an arithmetic number, because the mean of its divisors is an integer number (1100898631).

Almost surely, 2^12453312020 is an apocalyptic number.

12453312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12453312020 is an abundant number, since it is smaller than the sum of its proper divisors (13968255124).

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

12453312020 is a wasteful number, since it uses less digits than its factorization.

12453312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419339 (or 6419337 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12453312020 its reverse (2021335421), we get a palindrome (14474647441).

The spelling of 12453312020 in words is "twelve billion, four hundred fifty-three million, three hundred twelve thousand, twenty".