16997284655657 has 8 divisors (see below), whose sum is σ = 17450186529600. Its totient is φ = 16549279018480.

The previous prime is 16997284655647. The next prime is 16997284655677. The reversal of 16997284655657 is 75655648279961.

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 16997284655657 - 2⁸ = 16997284655401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16997284655647) 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, 1224052157 + ... + 1224066042.

It is an arithmetic number, because the mean of its divisors is an integer number (2181273316200).

Almost surely, 2^{16997284655657} is an apocalyptic number.

It is an amenable number.

16997284655657 is a deficient number, since it is larger than the sum of its proper divisors (452901873943).

16997284655657 is a wasteful number, since it uses less digits than its factorization.

16997284655657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448118383.

The product of its digits is 6858432000, while the sum is 80.

The spelling of 16997284655657 in words is "sixteen trillion, nine hundred ninety-seven billion, two hundred eighty-four million, six hundred fifty-five thousand, six hundred fifty-seven".