404512421331023 has 4 divisors (see below), whose sum is σ = 404512486908480. Its totient is φ = 404512355753568.

The previous prime is 404512421330947. The next prime is 404512421331043. The reversal of 404512421331023 is 320133124215404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404512421331023 - 2²⁰ = 404512420282447 is a prime.

It is a super-2 number, since 2×404512421331023² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404512421331043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22449215 + ... + 36235232.

It is an arithmetic number, because the mean of its divisors is an integer number (101128121727120).

Almost surely, 2^{404512421331023} is an apocalyptic number.

404512421331023 is a deficient number, since it is larger than the sum of its proper divisors (65577457).

404512421331023 is an equidigital number, since it uses as much as digits as its factorization.

404512421331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65577456.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 404512421331023 its reverse (320133124215404), we get a palindrome (724645545546427).

The spelling of 404512421331023 in words is "four hundred four trillion, five hundred twelve billion, four hundred twenty-one million, three hundred thirty-one thousand, twenty-three".