1305445403120 has 20 divisors (see below), whose sum is σ = 3035160562440. Its totient is φ = 522178161216.

The previous prime is 1305445403117. The next prime is 1305445403149. The reversal of 1305445403120 is 213045445031.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8159033690 + ... + 8159033849.

It is an arithmetic number, because the mean of its divisors is an integer number (151758028122).

Almost surely, 2^{1305445403120} is an apocalyptic number.

1305445403120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305445403120 is an abundant number, since it is smaller than the sum of its proper divisors (1729715159320).

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

1305445403120 is a wasteful number, since it uses less digits than its factorization.

1305445403120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16318067552 (or 16318067546 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 1305445403120 in words is "one trillion, three hundred five billion, four hundred forty-five million, four hundred three thousand, one hundred twenty".