161922211329 has 8 divisors (see below), whose sum is σ = 216822876192. Its totient is φ = 107484843680.

The previous prime is 161922211327. The next prime is 161922211357. The reversal of 161922211329 is 923112229161.

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 161922211329 - 2¹ = 161922211327 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161922211327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115823487 + ... + 115824884.

It is an arithmetic number, because the mean of its divisors is an integer number (27102859524).

Almost surely, 2^161922211329 is an apocalyptic number.

It is an amenable number.

161922211329 is a deficient number, since it is larger than the sum of its proper divisors (54900664863).

161922211329 is a wasteful number, since it uses less digits than its factorization.

161922211329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231648607.

The product of its digits is 23328, while the sum is 39.

The spelling of 161922211329 in words is "one hundred sixty-one billion, nine hundred twenty-two million, two hundred eleven thousand, three hundred twenty-nine".