161026705206 has 12 divisors (see below), whose sum is σ = 348891194652. Its totient is φ = 53675568396.

The previous prime is 161026705199. The next prime is 161026705207. The reversal of 161026705206 is 602507620161.

It is a happy number.

161026705206 is a `hidden beast` number, since 1 + 61 + 0 + 2 + 6 + 70 + 520 + 6 = 666.

161026705206 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161026705207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4472964016 + ... + 4472964051.

It is an arithmetic number, because the mean of its divisors is an integer number (29074266221).

Almost surely, 2^161026705206 is an apocalyptic number.

161026705206 is an abundant number, since it is smaller than the sum of its proper divisors (187864489446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161026705206 is a wasteful number, since it uses less digits than its factorization.

161026705206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945928075 (or 8945928072 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 161026705206 in words is "one hundred sixty-one billion, twenty-six million, seven hundred five thousand, two hundred six".