404221142454552 has 48 divisors (see below), whose sum is σ = 1094802807702240. Its totient is φ = 134735800688448.

The previous prime is 404221142454551. The next prime is 404221142454611. The reversal of 404221142454552 is 255454241122404.

404221142454552 is a `hidden beast` number, since 4 + 0 + 4 + 2 + 2 + 1 + 1 + 42 + 4 + 54 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 404221142454498 and 404221142454507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404221142454551) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 93286203 + ... + 97523114.

It is an arithmetic number, because the mean of its divisors is an integer number (22808391827130).

Almost surely, 2^{404221142454552} is an apocalyptic number.

It is an amenable number.

404221142454552 is an abundant number, since it is smaller than the sum of its proper divisors (690581665247688).

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

404221142454552 is a wasteful number, since it uses less digits than its factorization.

404221142454552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190838752 (or 190838745 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 45.

Adding to 404221142454552 its reverse (255454241122404), we get a palindrome (659675383576956).

The spelling of 404221142454552 in words is "four hundred four trillion, two hundred twenty-one billion, one hundred forty-two million, four hundred fifty-four thousand, five hundred fifty-two".