21324466166 has 16 divisors (see below), whose sum is σ = 32229414000. Its totient is φ = 10581593088.

The previous prime is 21324466091. The next prime is 21324466181. The reversal of 21324466166 is 66166442312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95810 + ... + 227658.

It is an arithmetic number, because the mean of its divisors is an integer number (2014338375).

Almost surely, 2^21324466166 is an apocalyptic number.

21324466166 is a deficient number, since it is larger than the sum of its proper divisors (10904947834).

21324466166 is a wasteful number, since it uses less digits than its factorization.

21324466166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132463.

The product of its digits is 248832, while the sum is 41.

The spelling of 21324466166 in words is "twenty-one billion, three hundred twenty-four million, four hundred sixty-six thousand, one hundred sixty-six".