21164363233 has 8 divisors (see below), whose sum is σ = 23113411776. Its totient is φ = 19261174800.

The previous prime is 21164363201. The next prime is 21164363237. The reversal of 21164363233 is 33236346112.

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

It is a cyclic number.

It is not a de Polignac number, because 21164363233 - 2⁵ = 21164363201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21164363237) 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, 11464063 + ... + 11465908.

It is an arithmetic number, because the mean of its divisors is an integer number (2889176472).

Almost surely, 2^21164363233 is an apocalyptic number.

It is an amenable number.

21164363233 is a deficient number, since it is larger than the sum of its proper divisors (1949048543).

21164363233 is a wasteful number, since it uses less digits than its factorization.

21164363233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930055.

The product of its digits is 46656, while the sum is 34.

The spelling of 21164363233 in words is "twenty-one billion, one hundred sixty-four million, three hundred sixty-three thousand, two hundred thirty-three".