161706568984 has 32 divisors (see below), whose sum is σ = 303680828880. Its totient is φ = 80725100544.

The previous prime is 161706568957. The next prime is 161706568999. The reversal of 161706568984 is 489865607161.

It is a happy number.

161706568984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161706568984² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 27606184 + ... + 27612040.

Almost surely, 2^161706568984 is an apocalyptic number.

It is an amenable number.

161706568984 is a deficient number, since it is larger than the sum of its proper divisors (141974259896).

161706568984 is a wasteful number, since it uses less digits than its factorization.

161706568984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747 (or 10743 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 161706568984 in words is "one hundred sixty-one billion, seven hundred six million, five hundred sixty-eight thousand, nine hundred eighty-four".