404505340000 has 120 divisors (see below), whose sum is σ = 1029460592160. Its totient is φ = 156222528000.

The previous prime is 404505339991. The next prime is 404505340037. The reversal of 404505340000 is 43505404.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 231289 + ... + 928711.

It is an arithmetic number, because the mean of its divisors is an integer number (8578838268).

Almost surely, 2^404505340000 is an apocalyptic number.

404505340000 is a gapful number since it is divisible by the number (40) 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 404505340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514730296080).

404505340000 is an abundant number, since it is smaller than the sum of its proper divisors (624955252160).

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

404505340000 is an equidigital number, since it uses as much as digits as its factorization.

404505340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697482 (or 697459 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 404505340000 its reverse (43505404), we get a palindrome (404548845404).

The spelling of 404505340000 in words is "four hundred four billion, five hundred five million, three hundred forty thousand".