512233454240 has 144 divisors (see below), whose sum is σ = 1262930628960. Its totient is φ = 196311198720.

The previous prime is 512233454233. The next prime is 512233454309. The reversal of 512233454240 is 42454332215.

It is a happy number.

It is a super-2 number, since 2×512233454240² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 512233454240.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17612831 + ... + 17641889.

It is an arithmetic number, because the mean of its divisors is an integer number (8770351590).

Almost surely, 2^512233454240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512233454240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631465314480).

512233454240 is an abundant number, since it is smaller than the sum of its proper divisors (750697174720).

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

512233454240 is a wasteful number, since it uses less digits than its factorization.

512233454240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29263 (or 29226 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 512233454240 its reverse (42454332215), we get a palindrome (554687786455).

The spelling of 512233454240 in words is "five hundred twelve billion, two hundred thirty-three million, four hundred fifty-four thousand, two hundred forty".