213630212620 has 96 divisors (see below), whose sum is σ = 497534026752. Its totient is φ = 76404000000.

The previous prime is 213630212617. The next prime is 213630212659. The reversal of 213630212620 is 26212036312.

213630212620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3323385 + ... + 3387055.

It is an arithmetic number, because the mean of its divisors is an integer number (5182646112).

Almost surely, 2^213630212620 is an apocalyptic number.

213630212620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213630212620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248767013376).

213630212620 is an abundant number, since it is smaller than the sum of its proper divisors (283903814132).

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

213630212620 is a wasteful number, since it uses less digits than its factorization.

213630212620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63943 (or 63941 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 213630212620 its reverse (26212036312), we get a palindrome (239842248932).

The spelling of 213630212620 in words is "two hundred thirteen billion, six hundred thirty million, two hundred twelve thousand, six hundred twenty".