21730004410 has 16 divisors (see below), whose sum is σ = 39140303400. Its totient is φ = 8686158336.

The previous prime is 21730004353. The next prime is 21730004437. The reversal of 21730004410 is 1440003712.

It can be written as a sum of positive squares in 4 ways, for example, as 13293398209 + 8436606201 = 115297^2 + 91851^2 .

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 7 ways as a sum of consecutive naturals, for example, 714795 + ... + 744574.

Almost surely, 2^21730004410 is an apocalyptic number.

21730004410 is a deficient number, since it is larger than the sum of its proper divisors (17410298990).

21730004410 is a wasteful number, since it uses less digits than its factorization.

21730004410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460865.

The product of its (nonzero) digits is 672, while the sum is 22.

The spelling of 21730004410 in words is "twenty-one billion, seven hundred thirty million, four thousand, four hundred ten".