20345020052573 has 2 divisors, whose sum is σ = 20345020052574. Its totient is φ = 20345020052572.

The previous prime is 20345020052509. The next prime is 20345020052659. The reversal of 20345020052573 is 37525002054302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19972702860889 + 372317191684 = 4469083^2 + 610178^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345020052573 - 2⁶ = 20345020052509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345020012573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172510026286 + 10172510026287.

It is an arithmetic number, because the mean of its divisors is an integer number (10172510026287).

Almost surely, 2^{20345020052573} is an apocalyptic number.

It is an amenable number.

20345020052573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345020052573 is an equidigital number, since it uses as much as digits as its factorization.

20345020052573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 38.

The spelling of 20345020052573 in words is "twenty trillion, three hundred forty-five billion, twenty million, fifty-two thousand, five hundred seventy-three".