1005344443420 has 12 divisors (see below), whose sum is σ = 2111223331224. Its totient is φ = 402137777360.

The previous prime is 1005344443357. The next prime is 1005344443423. The reversal of 1005344443420 is 243444435001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005344443423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25133611066 + ... + 25133611105.

It is an arithmetic number, because the mean of its divisors is an integer number (175935277602).

Almost surely, 2^{1005344443420} is an apocalyptic number.

1005344443420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005344443420 is an abundant number, since it is smaller than the sum of its proper divisors (1105878887804).

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

1005344443420 is a wasteful number, since it uses less digits than its factorization.

1005344443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50267222180 (or 50267222178 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 1005344443420 its reverse (243444435001), we get a palindrome (1248788878421).

The spelling of 1005344443420 in words is "one trillion, five billion, three hundred forty-four million, four hundred forty-three thousand, four hundred twenty".