212453145424 has 80 divisors (see below), whose sum is σ = 468717222400. Its totient is φ = 92477541888.

The previous prime is 212453145409. The next prime is 212453145469. The reversal of 212453145424 is 424541354212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760762 + ... + 1001830.

It is an arithmetic number, because the mean of its divisors is an integer number (5858965280).

Almost surely, 2^212453145424 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 212453145424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234358611200).

212453145424 is an abundant number, since it is smaller than the sum of its proper divisors (256264076976).

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

212453145424 is a wasteful number, since it uses less digits than its factorization.

212453145424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241332 (or 241326 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 212453145424 its reverse (424541354212), we get a palindrome (636994499636).

The spelling of 212453145424 in words is "two hundred twelve billion, four hundred fifty-three million, one hundred forty-five thousand, four hundred twenty-four".