20730733223 has 4 divisors (see below), whose sum is σ = 20734852320. Its totient is φ = 20726614128.

The previous prime is 20730733193. The next prime is 20730733271. The reversal of 20730733223 is 32233703702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32233703702 = 2 ⋅16116851851.

It is a cyclic number.

It is not a de Polignac number, because 20730733223 - 2¹⁰ = 20730732199 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 20730733223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730733823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051990 + ... + 2062067.

It is an arithmetic number, because the mean of its divisors is an integer number (5183713080).

Almost surely, 2^20730733223 is an apocalyptic number.

20730733223 is a deficient number, since it is larger than the sum of its proper divisors (4119097).

20730733223 is an equidigital number, since it uses as much as digits as its factorization.

20730733223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119096.

The product of its (nonzero) digits is 31752, while the sum is 32.

The spelling of 20730733223 in words is "twenty billion, seven hundred thirty million, seven hundred thirty-three thousand, two hundred twenty-three".