16657939017 has 12 divisors (see below), whose sum is σ = 24064015300. Its totient is φ = 11104116768.

The previous prime is 16657939013. The next prime is 16657939021. The reversal of 16657939017 is 71093975661.

It is a happy number.

16657939017 is a `hidden beast` number, since 1 + 66 + 579 + 3 + 9 + 0 + 1 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (16657939013) and next prime (16657939021).

It can be written as a sum of positive squares in 2 ways, for example, as 9248861241 + 7409077776 = 96171^2 + 86076^2 .

It is not a de Polignac number, because 16657939017 - 2² = 16657939013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16657939013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3478 + ... + 182559.

Almost surely, 2^16657939017 is an apocalyptic number.

It is an amenable number.

16657939017 is a deficient number, since it is larger than the sum of its proper divisors (7406076283).

16657939017 is a wasteful number, since it uses less digits than its factorization.

16657939017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195992 (or 195989 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 16657939017 in words is "sixteen billion, six hundred fifty-seven million, nine hundred thirty-nine thousand, seventeen".