161550249112 has 64 divisors (see below), whose sum is σ = 349005888000. Its totient is φ = 68671431936.

The previous prime is 161550249097. The next prime is 161550249131. The reversal of 161550249112 is 211942055161.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8529589 + ... + 8548507.

It is an arithmetic number, because the mean of its divisors is an integer number (5453217000).

Almost surely, 2^161550249112 is an apocalyptic number.

It is an amenable number.

161550249112 is an abundant number, since it is smaller than the sum of its proper divisors (187455638888).

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

161550249112 is a wasteful number, since it uses less digits than its factorization.

161550249112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20168 (or 20164 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 161550249112 in words is "one hundred sixty-one billion, five hundred fifty million, two hundred forty-nine thousand, one hundred twelve".