21824709206 has 16 divisors (see below), whose sum is σ = 32854852800. Its totient is φ = 10873116360.

The previous prime is 21824709199. The next prime is 21824709209. The reversal of 21824709206 is 60290742812.

It is a super-2 number, since 2×21824709206² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21824709209) 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, 3127301 + ... + 3134271.

It is an arithmetic number, because the mean of its divisors is an integer number (2053428300).

Almost surely, 2^21824709206 is an apocalyptic number.

21824709206 is a deficient number, since it is larger than the sum of its proper divisors (11030143594).

21824709206 is a wasteful number, since it uses less digits than its factorization.

21824709206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 21824709206 in words is "twenty-one billion, eight hundred twenty-four million, seven hundred nine thousand, two hundred six".