161952323216 has 20 divisors (see below), whose sum is σ = 332240428332. Its totient is φ = 76212857856.

The previous prime is 161952323189. The next prime is 161952323237. The reversal of 161952323216 is 612323259161.

It can be written as a sum of positive squares in 2 ways, for example, as 115330876816 + 46621446400 = 339604^2 + 215920^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 297706205 + ... + 297706748.

Almost surely, 2^161952323216 is an apocalyptic number.

161952323216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161952323216 is an abundant number, since it is smaller than the sum of its proper divisors (170288105116).

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

161952323216 is a wasteful number, since it uses less digits than its factorization.

161952323216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595412978 (or 595412972 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The spelling of 161952323216 in words is "one hundred sixty-one billion, nine hundred fifty-two million, three hundred twenty-three thousand, two hundred sixteen".