1280485120000 has 240 divisors, whose sum is σ = 3225008666880. Its totient is φ = 508096512000.

The previous prime is 1280485119997. The next prime is 1280485120043. The reversal of 1280485120000 is 215840821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 162556062 + ... + 162563938.

It is an arithmetic number, because the mean of its divisors is an integer number (13437536112).

Almost surely, 2^{1280485120000} is an apocalyptic number.

1280485120000 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 1280485120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612504333440).

1280485120000 is an abundant number, since it is smaller than the sum of its proper divisors (1944523546880).

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

1280485120000 is an frugal number, since it uses more digits than its factorization.

1280485120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046 (or 8011 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The spelling of 1280485120000 in words is "one trillion, two hundred eighty billion, four hundred eighty-five million, one hundred twenty thousand".