16979270840569 has 2 divisors, whose sum is σ = 16979270840570. Its totient is φ = 16979270840568.

The previous prime is 16979270840557. The next prime is 16979270840621. The reversal of 16979270840569 is 96504807297961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16889757381225 + 89513459344 = 4109715^2 + 299188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16979270840569 is a prime.

It is a super-2 number, since 2×16979270840569² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16979270840549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8489635420284 + 8489635420285.

It is an arithmetic number, because the mean of its divisors is an integer number (8489635420285).

Almost surely, 2^{16979270840569} is an apocalyptic number.

It is an amenable number.

16979270840569 is a deficient number, since it is larger than the sum of its proper divisors (1).

16979270840569 is an equidigital number, since it uses as much as digits as its factorization.

16979270840569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411505920, while the sum is 73.

The spelling of 16979270840569 in words is "sixteen trillion, nine hundred seventy-nine billion, two hundred seventy million, eight hundred forty thousand, five hundred sixty-nine".