161403032200 has 48 divisors (see below), whose sum is σ = 388202134500. Its totient is φ = 62334961920.

The previous prime is 161403032191. The next prime is 161403032207. The reversal of 161403032200 is 2230304161.

It can be written as a sum of positive squares in 6 ways, for example, as 96309674244 + 65093357956 = 310338^2 + 255134^2 .

It is not an unprimeable number, because it can be changed into a prime (161403032207) 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 11 ways as a sum of consecutive naturals, for example, 13908255 + ... + 13919854.

Almost surely, 2^161403032200 is an apocalyptic number.

161403032200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161403032200 is an abundant number, since it is smaller than the sum of its proper divisors (226799102300).

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

161403032200 is a wasteful number, since it uses less digits than its factorization.

161403032200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27828154 (or 27828145 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 161403032200 its reverse (2230304161), we get a palindrome (163633336361).

The spelling of 161403032200 in words is "one hundred sixty-one billion, four hundred three million, thirty-two thousand, two hundred".