162091287091 has 2 divisors, whose sum is σ = 162091287092. Its totient is φ = 162091287090.

The previous prime is 162091287067. The next prime is 162091287157. The reversal of 162091287091 is 190782190261.

162091287091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162091287091 - 2¹¹ = 162091285043 is a prime.

It is not a weakly prime, because it can be changed into another prime (162091287031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81045643545 + 81045643546.

It is an arithmetic number, because the mean of its divisors is an integer number (81045643546).

Almost surely, 2^162091287091 is an apocalyptic number.

162091287091 is a deficient number, since it is larger than the sum of its proper divisors (1).

162091287091 is an equidigital number, since it uses as much as digits as its factorization.

162091287091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 162091287091 in words is "one hundred sixty-two billion, ninety-one million, two hundred eighty-seven thousand, ninety-one".