16585394657 has 8 divisors (see below), whose sum is σ = 17954711040. Its totient is φ = 15229437840.

The previous prime is 16585394653. The next prime is 16585394659. The reversal of 16585394657 is 75649358561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16585394657 - 2² = 16585394653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16585394596 and 16585394605.

It is not an unprimeable number, because it can be changed into a prime (16585394653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3337307 + ... + 3342272.

It is an arithmetic number, because the mean of its divisors is an integer number (2244338880).

Almost surely, 2^16585394657 is an apocalyptic number.

It is an amenable number.

16585394657 is a deficient number, since it is larger than the sum of its proper divisors (1369316383).

16585394657 is a wasteful number, since it uses less digits than its factorization.

16585394657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6679783.

The product of its digits is 27216000, while the sum is 59.

The spelling of 16585394657 in words is "sixteen billion, five hundred eighty-five million, three hundred ninety-four thousand, six hundred fifty-seven".