20420023300073 has 2 divisors, whose sum is σ = 20420023300074. Its totient is φ = 20420023300072.

The previous prime is 20420023300049. The next prime is 20420023300109. The reversal of 20420023300073 is 37000332002402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11103536846809 + 9316486453264 = 3332197^2 + 3052292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20420023300073 - 2⁸ = 20420023299817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20420023306073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210011650036 + 10210011650037.

It is an arithmetic number, because the mean of its divisors is an integer number (10210011650037).

Almost surely, 2^{20420023300073} is an apocalyptic number.

It is an amenable number.

20420023300073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20420023300073 is an equidigital number, since it uses as much as digits as its factorization.

20420023300073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 26.

Adding to 20420023300073 its reverse (37000332002402), we get a palindrome (57420355302475).

The spelling of 20420023300073 in words is "twenty trillion, four hundred twenty billion, twenty-three million, three hundred thousand, seventy-three".