16720773143 has 4 divisors (see below), whose sum is σ = 16842822720. Its totient is φ = 16598723568.

The previous prime is 16720773133. The next prime is 16720773191. The reversal of 16720773143 is 34137702761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34137702761 = 547 ⋅62408963.

It is a cyclic number.

It is not a de Polignac number, because 16720773143 - 2¹⁰ = 16720772119 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 16720773143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720773133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61024583 + ... + 61024856.

It is an arithmetic number, because the mean of its divisors is an integer number (4210705680).

Almost surely, 2^16720773143 is an apocalyptic number.

16720773143 is a deficient number, since it is larger than the sum of its proper divisors (122049577).

16720773143 is a wasteful number, since it uses less digits than its factorization.

16720773143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122049576.

The product of its (nonzero) digits is 148176, while the sum is 41.

The spelling of 16720773143 in words is "sixteen billion, seven hundred twenty million, seven hundred seventy-three thousand, one hundred forty-three".