16585394653 has 2 divisors, whose sum is σ = 16585394654. Its totient is φ = 16585394652.

The previous prime is 16585394629. The next prime is 16585394659. The reversal of 16585394653 is 35649358561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16395009849 + 190384804 = 128043^2 + 13798^2 .

It is a cyclic number.

It is not a de Polignac number, because 16585394653 - 2⁵ = 16585394621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16585394594 and 16585394603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16585394659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8292697326 + 8292697327.

It is an arithmetic number, because the mean of its divisors is an integer number (8292697327).

Almost surely, 2^16585394653 is an apocalyptic number.

It is an amenable number.

16585394653 is a deficient number, since it is larger than the sum of its proper divisors (1).

16585394653 is an equidigital number, since it uses as much as digits as its factorization.

16585394653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664000, while the sum is 55.

The spelling of 16585394653 in words is "sixteen billion, five hundred eighty-five million, three hundred ninety-four thousand, six hundred fifty-three".