12453512020000 has 60 divisors (see below), whose sum is σ = 30637507645206. Its totient is φ = 4981404800000.

The previous prime is 12453512019973. The next prime is 12453512020057. The reversal of 12453512020000 is 2021535421.

It can be written as a sum of positive squares in 5 ways, for example, as 159708932496 + 12293803087504 = 399636^2 + 3506252^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 311317801 + ... + 311357800.

Almost surely, 2^{12453512020000} is an apocalyptic number.

12453512020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12453512020000 is an abundant number, since it is smaller than the sum of its proper divisors (18183995625206).

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

12453512020000 is an frugal number, since it uses more digits than its factorization.

12453512020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622675631 (or 622675608 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12453512020000 its reverse (2021535421), we get a palindrome (12455533555421).

The spelling of 12453512020000 in words is "twelve trillion, four hundred fifty-three billion, five hundred twelve million, twenty thousand".