80017908918840 has 192 divisors, whose sum is σ = 261861721430400. Its totient is φ = 21190336356096.

The previous prime is 80017908918781. The next prime is 80017908918841. The reversal of 80017908918840 is 4881980971008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80017908918841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73336567 + ... + 74419673.

It is an arithmetic number, because the mean of its divisors is an integer number (1363863132450).

Almost surely, 2^{80017908918840} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80017908918840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130930860715200).

80017908918840 is an abundant number, since it is smaller than the sum of its proper divisors (181843812511560).

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

80017908918840 is a wasteful number, since it uses less digits than its factorization.

80017908918840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084546 (or 1084539 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 63.

The spelling of 80017908918840 in words is "eighty trillion, seventeen billion, nine hundred eight million, nine hundred eighteen thousand, eight hundred forty".