21343908086 has 16 divisors (see below), whose sum is σ = 32656927680. Its totient is φ = 10459359240.

The previous prime is 21343908083. The next prime is 21343908101. The reversal of 21343908086 is 68080934312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343908083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234176 + ... + 312291.

It is an arithmetic number, because the mean of its divisors is an integer number (2041057980).

Almost surely, 2^21343908086 is an apocalyptic number.

21343908086 is a deficient number, since it is larger than the sum of its proper divisors (11313019594).

21343908086 is a wasteful number, since it uses less digits than its factorization.

21343908086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546859.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 21343908086 in words is "twenty-one billion, three hundred forty-three million, nine hundred eight thousand, eighty-six".