1284036484840 has 64 divisors (see below), whose sum is σ = 2937273073920. Its totient is φ = 505052064000.

The previous prime is 1284036484807. The next prime is 1284036484847. The reversal of 1284036484840 is 484846304821.

It is not an unprimeable number, because it can be changed into a prime (1284036484847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8787175 + ... + 8932105.

It is an arithmetic number, because the mean of its divisors is an integer number (45894891780).

Almost surely, 2^{1284036484840} is an apocalyptic number.

1284036484840 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 1284036484840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468636536960).

1284036484840 is an abundant number, since it is smaller than the sum of its proper divisors (1653236589080).

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

1284036484840 is a wasteful number, since it uses less digits than its factorization.

1284036484840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148634 (or 148630 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 52.

The spelling of 1284036484840 in words is "one trillion, two hundred eighty-four billion, thirty-six million, four hundred eighty-four thousand, eight hundred forty".