80844804400 has 60 divisors (see below), whose sum is σ = 194455536192. Its totient is φ = 32300312320.

The previous prime is 80844804389. The next prime is 80844804437. The reversal of 80844804400 is 440844808.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 11 ways as a sum of consecutive naturals, for example, 228102 + ... + 462298.

Almost surely, 2^80844804400 is an apocalyptic number.

80844804400 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 80844804400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97227768096).

80844804400 is an abundant number, since it is smaller than the sum of its proper divisors (113610731792).

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

80844804400 is a wasteful number, since it uses less digits than its factorization.

80844804400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235078 (or 235067 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 80844804400 in words is "eighty billion, eight hundred forty-four million, eight hundred four thousand, four hundred".