1281083220480 has 240 divisors, whose sum is σ = 4764111327360. Its totient is φ = 292818935808.

The previous prime is 1281083220437. The next prime is 1281083220481. The reversal of 1281083220480 is 840223801821.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (1281083220481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1325800 + ... + 2078439.

It is an arithmetic number, because the mean of its divisors is an integer number (19850463864).

Almost surely, 2^{1281083220480} is an apocalyptic number.

1281083220480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281083220480 is an abundant number, since it is smaller than the sum of its proper divisors (3483028106880).

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

1281083220480 is an equidigital number, since it uses as much as digits as its factorization.

1281083220480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404279 (or 3404256 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 1281083220480 in words is "one trillion, two hundred eighty-one billion, eighty-three million, two hundred twenty thousand, four hundred eighty".