1445345423984 has 120 divisors (see below), whose sum is σ = 3562335329280. Its totient is φ = 555993060480.

The previous prime is 1445345423957. The next prime is 1445345423999. The reversal of 1445345423984 is 4893245435441.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395597 + ... + 1745619.

It is an arithmetic number, because the mean of its divisors is an integer number (29686127744).

Almost surely, 2^{1445345423984} is an apocalyptic number.

1445345423984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445345423984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781167664640).

1445345423984 is an abundant number, since it is smaller than the sum of its proper divisors (2116989905296).

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

1445345423984 is a wasteful number, since it uses less digits than its factorization.

1445345423984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350139 (or 1350122 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 56.

The spelling of 1445345423984 in words is "one trillion, four hundred forty-five billion, three hundred forty-five million, four hundred twenty-three thousand, nine hundred eighty-four".