20858328223 has 16 divisors (see below), whose sum is σ = 21250285056. Its totient is φ = 20470788000.

The previous prime is 20858328217. The next prime is 20858328289. The reversal of 20858328223 is 32282385802.

It is a cyclic number.

It is not a de Polignac number, because 20858328223 - 2¹³ = 20858320031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20858328223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858328203) 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, 6414348 + ... + 6417598.

It is an arithmetic number, because the mean of its divisors is an integer number (1328142816).

Almost surely, 2^20858328223 is an apocalyptic number.

20858328223 is a deficient number, since it is larger than the sum of its proper divisors (391956833).

20858328223 is a wasteful number, since it uses less digits than its factorization.

20858328223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894.

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 20858328223 in words is "twenty billion, eight hundred fifty-eight million, three hundred twenty-eight thousand, two hundred twenty-three".