405404543120 has 40 divisors (see below), whose sum is σ = 943516872960. Its totient is φ = 161998151040.

The previous prime is 405404543111. The next prime is 405404543143. The reversal of 405404543120 is 21345404504.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2477510 + ... + 2636069.

It is an arithmetic number, because the mean of its divisors is an integer number (23587921824).

Almost surely, 2^405404543120 is an apocalyptic number.

405404543120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405404543120 is an abundant number, since it is smaller than the sum of its proper divisors (538112329840).

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

405404543120 is a wasteful number, since it uses less digits than its factorization.

405404543120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114583 (or 5114577 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 405404543120 its reverse (21345404504), we get a palindrome (426749947624).

The spelling of 405404543120 in words is "four hundred five billion, four hundred four million, five hundred forty-three thousand, one hundred twenty".