320444013134421 has 96 divisors (see below), whose sum is σ = 519274993805568. Its totient is φ = 188709886494720.

The previous prime is 320444013134419. The next prime is 320444013134461. The reversal of 320444013134421 is 124431310444023.

320444013134421 is a `hidden beast` number, since 3 + 2 + 0 + 44 + 40 + 131 + 3 + 442 + 1 = 666.

It is not a de Polignac number, because 320444013134421 - 2¹ = 320444013134419 is a prime.

It is a super-2 number, since 2×320444013134421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320444013134461) 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 95 ways as a sum of consecutive naturals, for example, 8897991411 + ... + 8898027423.

It is an arithmetic number, because the mean of its divisors is an integer number (5409114518808).

Almost surely, 2^{320444013134421} is an apocalyptic number.

It is an amenable number.

320444013134421 is a deficient number, since it is larger than the sum of its proper divisors (198830980671147).

320444013134421 is a wasteful number, since it uses less digits than its factorization.

320444013134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39211 (or 39208 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 320444013134421 its reverse (124431310444023), we get a palindrome (444875323578444).

The spelling of 320444013134421 in words is "three hundred twenty trillion, four hundred forty-four billion, thirteen million, one hundred thirty-four thousand, four hundred twenty-one".