80404840400 has 30 divisors (see below), whose sum is σ = 193172630022. Its totient is φ = 32161936000.

The previous prime is 80404840367. The next prime is 80404840423. The reversal of 80404840400 is 404840408.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3833095744 + 76571744656 = 61912^2 + 276716^2 .

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 5 ways as a sum of consecutive naturals, for example, 100505651 + ... + 100506450.

Almost surely, 2^80404840400 is an apocalyptic number.

80404840400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80404840400 is an abundant number, since it is smaller than the sum of its proper divisors (112767789622).

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

80404840400 is a wasteful number, since it uses less digits than its factorization.

80404840400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201012119 (or 201012108 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

It can be divided in two parts, 804048 and 40400, that added together give a palindrome (844448).

The spelling of 80404840400 in words is "eighty billion, four hundred four million, eight hundred forty thousand, four hundred".