21928363223 has 16 divisors (see below), whose sum is σ = 25021656576. Its totient is φ = 19037652480.

The previous prime is 21928363183. The next prime is 21928363283. The reversal of 21928363223 is 32236382912.

It is a cyclic number.

It is not a de Polignac number, because 21928363223 - 2³⁰ = 20854621399 is a prime.

It is a super-3 number, since 3×21928363223³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21928363283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291365 + ... + 358817.

It is an arithmetic number, because the mean of its divisors is an integer number (1563853536).

Almost surely, 2^21928363223 is an apocalyptic number.

21928363223 is a deficient number, since it is larger than the sum of its proper divisors (3093293353).

21928363223 is a wasteful number, since it uses less digits than its factorization.

21928363223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68954.

The product of its digits is 186624, while the sum is 41.

The spelling of 21928363223 in words is "twenty-one billion, nine hundred twenty-eight million, three hundred sixty-three thousand, two hundred twenty-three".