20013055543073 has 2 divisors, whose sum is σ = 20013055543074. Its totient is φ = 20013055543072.

The previous prime is 20013055543057. The next prime is 20013055543087. The reversal of 20013055543073 is 37034555031002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19565697895969 + 447357647104 = 4423313^2 + 668848^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013055543073 - 2⁴ = 20013055543057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20013055543003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006527771536 + 10006527771537.

It is an arithmetic number, because the mean of its divisors is an integer number (10006527771537).

Almost surely, 2^{20013055543073} is an apocalyptic number.

It is an amenable number.

20013055543073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013055543073 is an equidigital number, since it uses as much as digits as its factorization.

20013055543073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 20013055543073 in words is "twenty trillion, thirteen billion, fifty-five million, five hundred forty-three thousand, seventy-three".