12145443255020 has 48 divisors (see below), whose sum is σ = 25678226296800. Its totient is φ = 4825267992576.

The previous prime is 12145443255017. The next prime is 12145443255031. The reversal of 12145443255020 is 2055234454121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50519219 + ... + 50759061.

It is an arithmetic number, because the mean of its divisors is an integer number (534963047850).

Almost surely, 2^{12145443255020} is an apocalyptic number.

12145443255020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12145443255020 is an abundant number, since it is smaller than the sum of its proper divisors (13532783041780).

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

12145443255020 is a wasteful number, since it uses less digits than its factorization.

12145443255020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256994 (or 256992 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 12145443255020 in words is "twelve trillion, one hundred forty-five billion, four hundred forty-three million, two hundred fifty-five thousand, twenty".