20673333073 has 2 divisors, whose sum is σ = 20673333074. Its totient is φ = 20673333072.

The previous prime is 20673333071. The next prime is 20673333091. The reversal of 20673333073 is 37033337602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16447293009 + 4226040064 = 128247^2 + 65008^2 .

It is a cyclic number.

It is not a de Polignac number, because 20673333073 - 2¹ = 20673333071 is a prime.

Together with 20673333071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20673333071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336666536 + 10336666537.

It is an arithmetic number, because the mean of its divisors is an integer number (10336666537).

Almost surely, 2^20673333073 is an apocalyptic number.

It is an amenable number.

20673333073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20673333073 is an equidigital number, since it uses as much as digits as its factorization.

20673333073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 37.

The spelling of 20673333073 in words is "twenty billion, six hundred seventy-three million, three hundred thirty-three thousand, seventy-three".