1798691220480 has 1408 divisors, whose sum is σ = 7387744444416. Its totient is φ = 362741760000.

The previous prime is 1798691220433. The next prime is 1798691220559. The reversal of 1798691220480 is 840221968971.

It is a tau number, because it is divible by the number of its divisors (1408).

It is a self number, because there is not a number n which added to its sum of digits gives 1798691220480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7166100355 + ... + 7166100605.

Almost surely, 2^{1798691220480} is an apocalyptic number.

1798691220480 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 1798691220480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3693872222208).

1798691220480 is an abundant number, since it is smaller than the sum of its proper divisors (5589053223936).

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

1798691220480 is a wasteful number, since it uses less digits than its factorization.

1798691220480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 1798691220480 in words is "one trillion, seven hundred ninety-eight billion, six hundred ninety-one million, two hundred twenty thousand, four hundred eighty".