21326030354 has 8 divisors (see below), whose sum is σ = 31993638348. Its totient is φ = 10661484240.

The previous prime is 21326030311. The next prime is 21326030359. The reversal of 21326030354 is 45303062312.

It can be written as a sum of positive squares in 2 ways, for example, as 21320380225 + 5650129 = 146015^2 + 2377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21326030359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747977 + ... + 775964.

Almost surely, 2^21326030354 is an apocalyptic number.

21326030354 is a deficient number, since it is larger than the sum of its proper divisors (10667607994).

21326030354 is a wasteful number, since it uses less digits than its factorization.

21326030354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530940.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 21326030354 its reverse (45303062312), we get a palindrome (66629092666).

The spelling of 21326030354 in words is "twenty-one billion, three hundred twenty-six million, thirty thousand, three hundred fifty-four".