17797580820 has 240 divisors, whose sum is σ = 59739926400. Its totient is φ = 4422055680.

The previous prime is 17797580819. The next prime is 17797580831. The reversal of 17797580820 is 2808579771.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1872841 + ... + 1882319.

It is an arithmetic number, because the mean of its divisors is an integer number (248916360).

Almost surely, 2^17797580820 is an apocalyptic number.

17797580820 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 17797580820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29869963200).

17797580820 is an abundant number, since it is smaller than the sum of its proper divisors (41942345580).

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

17797580820 is a wasteful number, since it uses less digits than its factorization.

17797580820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580 (or 9569 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The spelling of 17797580820 in words is "seventeen billion, seven hundred ninety-seven million, five hundred eighty thousand, eight hundred twenty".