21433442334 has 16 divisors (see below), whose sum is σ = 42869513088. Its totient is φ = 7144042712.

The previous prime is 21433442323. The next prime is 21433442341. The reversal of 21433442334 is 43324433412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21433442295 and 21433442304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5839 + ... + 207125.

It is an arithmetic number, because the mean of its divisors is an integer number (2679344568).

Almost surely, 2^21433442334 is an apocalyptic number.

21433442334 is an abundant number, since it is smaller than the sum of its proper divisors (21436070754).

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

21433442334 is a wasteful number, since it uses less digits than its factorization.

21433442334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219039.

The product of its digits is 82944, while the sum is 33.

Adding to 21433442334 its reverse (43324433412), we get a palindrome (64757875746).

The spelling of 21433442334 in words is "twenty-one billion, four hundred thirty-three million, four hundred forty-two thousand, three hundred thirty-four".