16805690207701 has 2 divisors, whose sum is σ = 16805690207702. Its totient is φ = 16805690207700.

The previous prime is 16805690207671. The next prime is 16805690207707. The reversal of 16805690207701 is 10770209650861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12510015302500 + 4295674905201 = 3536950^2 + 2072601^2 .

It is a cyclic number.

It is not a de Polignac number, because 16805690207701 - 2¹³ = 16805690199509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16805690207707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402845103850 + 8402845103851.

It is an arithmetic number, because the mean of its divisors is an integer number (8402845103851).

Almost surely, 2^{16805690207701} is an apocalyptic number.

It is an amenable number.

16805690207701 is a deficient number, since it is larger than the sum of its proper divisors (1).

16805690207701 is an equidigital number, since it uses as much as digits as its factorization.

16805690207701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 16805690207701 in words is "sixteen trillion, eight hundred five billion, six hundred ninety million, two hundred seven thousand, seven hundred one".