213232434444 has 96 divisors (see below), whose sum is σ = 566788017600. Its totient is φ = 69285150720.

The previous prime is 213232434439. The next prime is 213232434451. The reversal of 213232434444 is 444434232312.

213232434444 is a `hidden beast` number, since 213 + 2 + 3 + 2 + 434 + 4 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 213232434399 and 213232434408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5369092 + ... + 5408660.

It is an arithmetic number, because the mean of its divisors is an integer number (5904041850).

Almost surely, 2^213232434444 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 213232434444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283394008800).

213232434444 is an abundant number, since it is smaller than the sum of its proper divisors (353555583156).

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

213232434444 is a wasteful number, since it uses less digits than its factorization.

213232434444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40840 (or 40832 counting only the distinct ones).

The product of its digits is 221184, while the sum is 36.

Adding to 213232434444 its reverse (444434232312), we get a palindrome (657666666756).

The spelling of 213232434444 in words is "two hundred thirteen billion, two hundred thirty-two million, four hundred thirty-four thousand, four hundred forty-four".