20385537000193 has 2 divisors, whose sum is σ = 20385537000194. Its totient is φ = 20385537000192.

The previous prime is 20385537000163. The next prime is 20385537000329. The reversal of 20385537000193 is 39100073558302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15571602611569 + 4813934388624 = 3946087^2 + 2194068^2 .

It is a cyclic number.

It is not a de Polignac number, because 20385537000193 - 2⁵ = 20385537000161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20385537000113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10192768500096 + 10192768500097.

It is an arithmetic number, because the mean of its divisors is an integer number (10192768500097).

Almost surely, 2^{20385537000193} is an apocalyptic number.

It is an amenable number.

20385537000193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20385537000193 is an equidigital number, since it uses as much as digits as its factorization.

20385537000193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 20385537000193 in words is "twenty trillion, three hundred eighty-five billion, five hundred thirty-seven million, one hundred ninety-three", and thus it is an aban number.