21466163206 has 8 divisors (see below), whose sum is σ = 32240161080. Its totient is φ = 10719442848.

The previous prime is 21466163203. The next prime is 21466163227. The reversal of 21466163206 is 60236166412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21466163203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6817411 + ... + 6820558.

It is an arithmetic number, because the mean of its divisors is an integer number (4030020135).

Almost surely, 2^21466163206 is an apocalyptic number.

21466163206 is a deficient number, since it is larger than the sum of its proper divisors (10773997874).

21466163206 is a wasteful number, since it uses less digits than its factorization.

21466163206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13638758.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 21466163206 in words is "twenty-one billion, four hundred sixty-six million, one hundred sixty-three thousand, two hundred six".