21482319805 has 8 divisors (see below), whose sum is σ = 25805014272. Its totient is φ = 17168368848.

The previous prime is 21482319673. The next prime is 21482319877. The reversal of 21482319805 is 50891328412.

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

It is a cyclic number.

It is not a de Polignac number, because 21482319805 - 2⁹ = 21482319293 is a prime.

It is a super-2 number, since 2×21482319805² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2180469 + ... + 2190298.

It is an arithmetic number, because the mean of its divisors is an integer number (3225626784).

Almost surely, 2^21482319805 is an apocalyptic number.

It is an amenable number.

21482319805 is a deficient number, since it is larger than the sum of its proper divisors (4322694467).

21482319805 is an equidigital number, since it uses as much as digits as its factorization.

21482319805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371755.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 21482319805 in words is "twenty-one billion, four hundred eighty-two million, three hundred nineteen thousand, eight hundred five".