21008282433 has 8 divisors (see below), whose sum is σ = 28047854496. Its totient is φ = 13987116000.

The previous prime is 21008282419. The next prime is 21008282521. The reversal of 21008282433 is 33428280012.

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

It is not a de Polignac number, because 21008282433 - 2⁴ = 21008282417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21008282394 and 21008282403.

It is not an unprimeable number, because it can be changed into a prime (21008282033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4598743 + ... + 4603308.

It is an arithmetic number, because the mean of its divisors is an integer number (3505981812).

Almost surely, 2^21008282433 is an apocalyptic number.

It is an amenable number.

21008282433 is a deficient number, since it is larger than the sum of its proper divisors (7039572063).

21008282433 is an equidigital number, since it uses as much as digits as its factorization.

21008282433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9202815.

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 21008282433 in words is "twenty-one billion, eight million, two hundred eighty-two thousand, four hundred thirty-three".