1445621983488 has 864 divisors, whose sum is σ = 4902092496000. Its totient is φ = 418727854080.

The previous prime is 1445621983483. The next prime is 1445621983511. The reversal of 1445621983488 is 8843891265441.

It is a happy number.

1445621983488 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 62 + 1 + 98 + 3 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-2 number, since 2×1445621983488² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445621983483) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1556105008 + ... + 1556105936.

Almost surely, 2^{1445621983488} is an apocalyptic number.

1445621983488 is a gapful number since it is divisible by the number (18) 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 1445621983488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451046248000).

1445621983488 is an abundant number, since it is smaller than the sum of its proper divisors (3456470512512).

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

1445621983488 is a wasteful number, since it uses less digits than its factorization.

1445621983488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1011 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 63.

The spelling of 1445621983488 in words is "one trillion, four hundred forty-five billion, six hundred twenty-one million, nine hundred eighty-three thousand, four hundred eighty-eight".