80280340920 has 640 divisors, whose sum is σ = 300334003200. Its totient is φ = 19109551104.

The previous prime is 80280340831. The next prime is 80280340969. The reversal of 80280340920 is 2904308208.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 211821291 + ... + 211821669.

It is an arithmetic number, because the mean of its divisors is an integer number (469271880).

Almost surely, 2^80280340920 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 80280340920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150167001600).

80280340920 is an abundant number, since it is smaller than the sum of its proper divisors (220053662280).

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

80280340920 is a wasteful number, since it uses less digits than its factorization.

80280340920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 80280340920 in words is "eighty billion, two hundred eighty million, three hundred forty thousand, nine hundred twenty".