162011281289 has 48 divisors (see below), whose sum is σ = 194915515536. Its totient is φ = 133746708480.

The previous prime is 162011281213. The next prime is 162011281297. The reversal of 162011281289 is 982182110261.

It can be written as a sum of positive squares in 8 ways, for example, as 82091991289 + 79919290000 = 286517^2 + 282700^2 .

It is not a de Polignac number, because 162011281289 - 2¹⁶ = 162011215753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162011281889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24348287 + ... + 24354939.

It is an arithmetic number, because the mean of its divisors is an integer number (4060739907).

Almost surely, 2^162011281289 is an apocalyptic number.

It is an amenable number.

162011281289 is a deficient number, since it is larger than the sum of its proper divisors (32904234247).

162011281289 is a wasteful number, since it uses less digits than its factorization.

162011281289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938 (or 6927 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The spelling of 162011281289 in words is "one hundred sixty-two billion, eleven million, two hundred eighty-one thousand, two hundred eighty-nine".