440451214521 has 16 divisors (see below), whose sum is σ = 590736644160. Its totient is φ = 291903894720.

The previous prime is 440451214517. The next prime is 440451214559. The reversal of 440451214521 is 125412154044.

It is not a de Polignac number, because 440451214521 - 2² = 440451214517 is a prime.

It is a super-2 number, since 2×440451214521² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (440451214501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42295 + ... + 939516.

It is an arithmetic number, because the mean of its divisors is an integer number (36921040260).

Almost surely, 2^440451214521 is an apocalyptic number.

It is an amenable number.

440451214521 is a deficient number, since it is larger than the sum of its proper divisors (150285429639).

440451214521 is a wasteful number, since it uses less digits than its factorization.

440451214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982696.

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 440451214521 its reverse (125412154044), we get a palindrome (565863368565).

The spelling of 440451214521 in words is "four hundred forty billion, four hundred fifty-one million, two hundred fourteen thousand, five hundred twenty-one".