21410436605 has 16 divisors (see below), whose sum is σ = 26038032384. Its totient is φ = 16899503040.

The previous prime is 21410436601. The next prime is 21410436617. The reversal of 21410436605 is 50663401412.

It is not a de Polignac number, because 21410436605 - 2² = 21410436601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410436601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21794 + ... + 208076.

It is an arithmetic number, because the mean of its divisors is an integer number (1627377024).

Almost surely, 2^21410436605 is an apocalyptic number.

It is an amenable number.

21410436605 is a deficient number, since it is larger than the sum of its proper divisors (4627595779).

21410436605 is a wasteful number, since it uses less digits than its factorization.

21410436605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186596.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 21410436605 in words is "twenty-one billion, four hundred ten million, four hundred thirty-six thousand, six hundred five".