21344030032 has 20 divisors (see below), whose sum is σ = 44535140020. Its totient is φ = 9851090688.

The previous prime is 21344030017. The next prime is 21344030089. The reversal of 21344030032 is 23003044312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4554090256 + 16789939776 = 67484^2 + 129576^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21344029985 and 21344030012.

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, 51307557 + ... + 51307972.

It is an arithmetic number, because the mean of its divisors is an integer number (2226757001).

Almost surely, 2^21344030032 is an apocalyptic number.

It is an amenable number.

21344030032 is an abundant number, since it is smaller than the sum of its proper divisors (23191109988).

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

21344030032 is a wasteful number, since it uses less digits than its factorization.

21344030032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102615550 (or 102615544 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21344030032 its reverse (23003044312), we get a palindrome (44347074344).

The spelling of 21344030032 in words is "twenty-one billion, three hundred forty-four million, thirty thousand, thirty-two".