80009389920 has 192 divisors, whose sum is σ = 264295120320. Its totient is φ = 20317667328.

The previous prime is 80009389919. The next prime is 80009389931. The reversal of 80009389920 is 2998390008.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 80009389920.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 976792 + ... + 1055528.

It is an arithmetic number, because the mean of its divisors is an integer number (1376537085).

Almost surely, 2^80009389920 is an apocalyptic number.

80009389920 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 80009389920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132147560160).

80009389920 is an abundant number, since it is smaller than the sum of its proper divisors (184285730400).

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

80009389920 is a wasteful number, since it uses less digits than its factorization.

80009389920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78857 (or 78849 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 80009389920 in words is "eighty billion, nine million, three hundred eighty-nine thousand, nine hundred twenty".