20930010549073 has 2 divisors, whose sum is σ = 20930010549074. Its totient is φ = 20930010549072.

The previous prime is 20930010549037. The next prime is 20930010549089. The reversal of 20930010549073 is 37094501003902.

Together with previous prime (20930010549037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16413331487569 + 4516679061504 = 4051337^2 + 2125248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20930010549073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20930010549673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10465005274536 + 10465005274537.

It is an arithmetic number, because the mean of its divisors is an integer number (10465005274537).

Almost surely, 2^{20930010549073} is an apocalyptic number.

It is an amenable number.

20930010549073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20930010549073 is an equidigital number, since it uses as much as digits as its factorization.

20930010549073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 20930010549073 in words is "twenty trillion, nine hundred thirty billion, ten million, five hundred forty-nine thousand, seventy-three".