80720323200 has 576 divisors, whose sum is σ = 325885079520. Its totient is φ = 19566489600.

The previous prime is 80720323171. The next prime is 80720323237. The reversal of 80720323200 is 232302708.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8548882 + ... + 8558318.

Almost surely, 2^80720323200 is an apocalyptic number.

80720323200 is a gapful number since it is divisible by the number (80) 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 80720323200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162942539760).

80720323200 is an abundant number, since it is smaller than the sum of its proper divisors (245164756320).

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

80720323200 is a wasteful number, since it uses less digits than its factorization.

80720323200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487 (or 9458 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 80720323200 its reverse (232302708), we get a palindrome (80952625908).

The spelling of 80720323200 in words is "eighty billion, seven hundred twenty million, three hundred twenty-three thousand, two hundred".