21206244030592 has 32 divisors (see below), whose sum is σ = 42344382090780. Its totient is φ = 10578634407936.

The previous prime is 21206244030577. The next prime is 21206244030637. The reversal of 21206244030592 is 29503044260212.

It can be written as a sum of positive squares in 2 ways, for example, as 18605971679296 + 2600272351296 = 4313464^2 + 1612536^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191253793 + ... + 191364640.

Almost surely, 2^{21206244030592} is an apocalyptic number.

It is an amenable number.

21206244030592 is a deficient number, since it is larger than the sum of its proper divisors (21138138060188).

21206244030592 is an equidigital number, since it uses as much as digits as its factorization.

21206244030592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382618880 (or 382618868 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 21206244030592 in words is "twenty-one trillion, two hundred six billion, two hundred forty-four million, thirty thousand, five hundred ninety-two".