1283983444480 has 160 divisors (see below), whose sum is σ = 3372850248768. Its totient is φ = 464896819200.

The previous prime is 1283983444379. The next prime is 1283983444483. The reversal of 1283983444480 is 844443893821.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×1283983444480² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1283983444483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6463435 + ... + 6659125.

Almost surely, 2^{1283983444480} is an apocalyptic number.

1283983444480 is a gapful number since it is divisible by the number (10) 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 1283983444480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686425124384).

1283983444480 is an abundant number, since it is smaller than the sum of its proper divisors (2088866804288).

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

1283983444480 is a wasteful number, since it uses less digits than its factorization.

1283983444480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195958 (or 195942 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 58.

The spelling of 1283983444480 in words is "one trillion, two hundred eighty-three billion, nine hundred eighty-three million, four hundred forty-four thousand, four hundred eighty".