16711026777661 has 2 divisors, whose sum is σ = 16711026777662. Its totient is φ = 16711026777660.

The previous prime is 16711026777629. The next prime is 16711026777751. The reversal of 16711026777661 is 16677762011761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16114556318436 + 596470459225 = 4014294^2 + 772315^2 .

It is an emirp because it is prime and its reverse (16677762011761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16711026777661 - 2⁵ = 16711026777629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16711026777596 and 16711026777605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16711026777161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8355513388830 + 8355513388831.

It is an arithmetic number, because the mean of its divisors is an integer number (8355513388831).

Almost surely, 2^{16711026777661} is an apocalyptic number.

It is an amenable number.

16711026777661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16711026777661 is an equidigital number, since it uses as much as digits as its factorization.

16711026777661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6223392, while the sum is 58.

The spelling of 16711026777661 in words is "sixteen trillion, seven hundred eleven billion, twenty-six million, seven hundred seventy-seven thousand, six hundred sixty-one".