404403124121312 has 72 divisors (see below), whose sum is σ = 824753204553096. Its totient is φ = 195185584208384.

The previous prime is 404403124121309. The next prime is 404403124121351. The reversal of 404403124121312 is 213121421304404.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119243363 + ... + 122587869.

It is an arithmetic number, because the mean of its divisors is an integer number (11454905618793).

Almost surely, 2^{404403124121312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404403124121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412376602276548).

404403124121312 is an abundant number, since it is smaller than the sum of its proper divisors (420350080431784).

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

404403124121312 is a wasteful number, since it uses less digits than its factorization.

404403124121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349068 (or 3349031 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 404403124121312 its reverse (213121421304404), we get a palindrome (617524545425716).

The spelling of 404403124121312 in words is "four hundred four trillion, four hundred three billion, one hundred twenty-four million, one hundred twenty-one thousand, three hundred twelve".