16886742641 has 2 divisors, whose sum is σ = 16886742642. Its totient is φ = 16886742640.

The previous prime is 16886742629. The next prime is 16886742749. The reversal of 16886742641 is 14624768861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16564719616 + 322023025 = 128704^2 + 17945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16886742641 is a prime.

It is not a weakly prime, because it can be changed into another prime (16886742241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8443371320 + 8443371321.

It is an arithmetic number, because the mean of its divisors is an integer number (8443371321).

Almost surely, 2^16886742641 is an apocalyptic number.

It is an amenable number.

16886742641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16886742641 is an equidigital number, since it uses as much as digits as its factorization.

16886742641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 53.

The spelling of 16886742641 in words is "sixteen billion, eight hundred eighty-six million, seven hundred forty-two thousand, six hundred forty-one".