18801935351161 has 2 divisors, whose sum is σ = 18801935351162. Its totient is φ = 18801935351160.

The previous prime is 18801935351093. The next prime is 18801935351191. The reversal of 18801935351161 is 16115353910881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9638267957136 + 9163667394025 = 3104556^2 + 3027155^2 .

It is an emirp because it is prime and its reverse (16115353910881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18801935351161 - 2¹⁵ = 18801935318393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18801935351099 and 18801935351108.

It is not a weakly prime, because it can be changed into another prime (18801935351191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9400967675580 + 9400967675581.

It is an arithmetic number, because the mean of its divisors is an integer number (9400967675581).

Almost surely, 2^{18801935351161} is an apocalyptic number.

It is an amenable number.

18801935351161 is a deficient number, since it is larger than the sum of its proper divisors (1).

18801935351161 is an equidigital number, since it uses as much as digits as its factorization.

18801935351161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 52.

The spelling of 18801935351161 in words is "eighteen trillion, eight hundred one billion, nine hundred thirty-five million, three hundred fifty-one thousand, one hundred sixty-one".