21342323004 has 12 divisors (see below), whose sum is σ = 49798753704. Its totient is φ = 7114107664.

The previous prime is 21342322979. The next prime is 21342323077. The reversal of 21342323004 is 40032324312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889263447 + ... + 889263470.

It is an arithmetic number, because the mean of its divisors is an integer number (4149896142).

Almost surely, 2^21342323004 is an apocalyptic number.

It is an amenable number.

21342323004 is an abundant number, since it is smaller than the sum of its proper divisors (28456430700).

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

21342323004 is a wasteful number, since it uses less digits than its factorization.

21342323004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778526924 (or 1778526922 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21342323004 its reverse (40032324312), we get a palindrome (61374647316).

The spelling of 21342323004 in words is "twenty-one billion, three hundred forty-two million, three hundred twenty-three thousand, four".