165544959216 has 80 divisors (see below), whose sum is σ = 526348089344. Its totient is φ = 43660207872.

The previous prime is 165544959211. The next prime is 165544959257. The reversal of 165544959216 is 612959445561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165544959211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18945376 + ... + 18954111.

Almost surely, 2^165544959216 is an apocalyptic number.

165544959216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165544959216 is an abundant number, since it is smaller than the sum of its proper divisors (360803130128).

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

165544959216 is a wasteful number, since it uses less digits than its factorization.

165544959216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37899518 (or 37899512 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 57.

The spelling of 165544959216 in words is "one hundred sixty-five billion, five hundred forty-four million, nine hundred fifty-nine thousand, two hundred sixteen".