404521512245 has 16 divisors (see below), whose sum is σ = 486498383280. Its totient is φ = 322902528000.

The previous prime is 404521512217. The next prime is 404521512257. The reversal of 404521512245 is 542215125404.

It can be written as a sum of positive squares in 8 ways, for example, as 14817219076 + 389704293169 = 121726^2 + 624263^2 .

It is not a de Polignac number, because 404521512245 - 2²⁴ = 404504735029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9797645 + ... + 9838845.

It is an arithmetic number, because the mean of its divisors is an integer number (30406148955).

Almost surely, 2^404521512245 is an apocalyptic number.

It is an amenable number.

404521512245 is a deficient number, since it is larger than the sum of its proper divisors (81976871035).

404521512245 is a wasteful number, since it uses less digits than its factorization.

404521512245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45496.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 404521512245 its reverse (542215125404), we get a palindrome (946736637649).

The spelling of 404521512245 in words is "four hundred four billion, five hundred twenty-one million, five hundred twelve thousand, two hundred forty-five".