20160340073 has 2 divisors, whose sum is σ = 20160340074. Its totient is φ = 20160340072.

The previous prime is 20160340007. The next prime is 20160340087. The reversal of 20160340073 is 37004306102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18473430889 + 1686909184 = 135917^2 + 41072^2 .

It is a cyclic number.

It is not a de Polignac number, because 20160340073 - 2²⁰ = 20159291497 is a prime.

It is not a weakly prime, because it can be changed into another prime (20160340003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080170036 + 10080170037.

It is an arithmetic number, because the mean of its divisors is an integer number (10080170037).

Almost surely, 2^20160340073 is an apocalyptic number.

It is an amenable number.

20160340073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20160340073 is an equidigital number, since it uses as much as digits as its factorization.

20160340073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 20160340073 its reverse (37004306102), we get a palindrome (57164646175).

The spelling of 20160340073 in words is "twenty billion, one hundred sixty million, three hundred forty thousand, seventy-three".