21634303533 has 8 divisors (see below), whose sum is σ = 28869445248. Its totient is φ = 14411015424.

The previous prime is 21634303519. The next prime is 21634303573. The reversal of 21634303533 is 33530343612.

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

It is not a de Polignac number, because 21634303533 - 2¹⁰ = 21634302509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21634303494 and 21634303503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21634303573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2959141 + ... + 2966442.

It is an arithmetic number, because the mean of its divisors is an integer number (3608680656).

Almost surely, 2^21634303533 is an apocalyptic number.

It is an amenable number.

21634303533 is a deficient number, since it is larger than the sum of its proper divisors (7235141715).

21634303533 is a wasteful number, since it uses less digits than its factorization.

21634303533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926803.

The product of its (nonzero) digits is 58320, while the sum is 33.

The spelling of 21634303533 in words is "twenty-one billion, six hundred thirty-four million, three hundred three thousand, five hundred thirty-three".