161696016089 has 8 divisors (see below), whose sum is σ = 171423153408. Its totient is φ = 152250824880.

The previous prime is 161696016077. The next prime is 161696016113. The reversal of 161696016089 is 980610696161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161696016089 - 2²⁰ = 161694967513 is a prime.

It is a super-2 number, since 2×161696016089² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161696016089.

It is not an unprimeable number, because it can be changed into a prime (161696016059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70485347 + ... + 70487640.

It is an arithmetic number, because the mean of its divisors is an integer number (21427894176).

Almost surely, 2^161696016089 is an apocalyptic number.

It is an amenable number.

161696016089 is a deficient number, since it is larger than the sum of its proper divisors (9727137319).

161696016089 is a wasteful number, since it uses less digits than its factorization.

161696016089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140973055.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 161696016089 in words is "one hundred sixty-one billion, six hundred ninety-six million, sixteen thousand, eighty-nine".