160993886739809 has 2 divisors, whose sum is σ = 160993886739810. Its totient is φ = 160993886739808.

The previous prime is 160993886739713. The next prime is 160993886739893. The reversal of 160993886739809 is 908937688399061.

It is a happy number.

160993886739809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120017283457600 + 40976603282209 = 10955240^2 + 6401297^2 .

It is an emirp because it is prime and its reverse (908937688399061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160993886739809 is a prime.

It is a super-4 number, since 4×160993886739809⁴ (a number of 58 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (160993886739709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80496943369904 + 80496943369905.

It is an arithmetic number, because the mean of its divisors is an integer number (80496943369905).

Almost surely, 2^{160993886739809} is an apocalyptic number.

It is an amenable number.

160993886739809 is a deficient number, since it is larger than the sum of its proper divisors (1).

160993886739809 is an equidigital number, since it uses as much as digits as its factorization.

160993886739809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7618738176, while the sum is 86.

The spelling of 160993886739809 in words is "one hundred sixty trillion, nine hundred ninety-three billion, eight hundred eighty-six million, seven hundred thirty-nine thousand, eight hundred nine".