16711945109 has 2 divisors, whose sum is σ = 16711945110. Its totient is φ = 16711945108.

The previous prime is 16711945099. The next prime is 16711945123. The reversal of 16711945109 is 90154911761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10277498884 + 6434446225 = 101378^2 + 80215^2 .

It is a cyclic number.

It is not a de Polignac number, because 16711945109 - 2²⁸ = 16443509653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16711945109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16711945189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8355972554 + 8355972555.

It is an arithmetic number, because the mean of its divisors is an integer number (8355972555).

Almost surely, 2^16711945109 is an apocalyptic number.

It is an amenable number.

16711945109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16711945109 is an equidigital number, since it uses as much as digits as its factorization.

16711945109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 16711945109 in words is "sixteen billion, seven hundred eleven million, nine hundred forty-five thousand, one hundred nine".