21742446613330 has 16 divisors (see below), whose sum is σ = 39157121991960. Its totient is φ = 8692374625792.

The previous prime is 21742446613313. The next prime is 21742446613357. The reversal of 21742446613330 is 3331664424712.

It can be written as a sum of positive squares in 4 ways, for example, as 12610162064241 + 9132284549089 = 3551079^2 + 3021967^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575482609 + ... + 575520388.

Almost surely, 2^{21742446613330} is an apocalyptic number.

21742446613330 is a deficient number, since it is larger than the sum of its proper divisors (17414675378630).

21742446613330 is a wasteful number, since it uses less digits than its factorization.

21742446613330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151004893.

The product of its (nonzero) digits is 1741824, while the sum is 46.

The spelling of 21742446613330 in words is "twenty-one trillion, seven hundred forty-two billion, four hundred forty-six million, six hundred thirteen thousand, three hundred thirty".