161116223300 has 36 divisors (see below), whose sum is σ = 370188220500. Its totient is φ = 60655518720.

The previous prime is 161116223263. The next prime is 161116223309. The reversal of 161116223300 is 3322611161.

It can be written as a sum of positive squares in 6 ways, for example, as 9388834816 + 151727388484 = 96896^2 + 389522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161116223300.

It is not an unprimeable number, because it can be changed into a prime (161116223309) 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, 47385425 + ... + 47388824.

It is an arithmetic number, because the mean of its divisors is an integer number (10283006125).

Almost surely, 2^161116223300 is an apocalyptic number.

161116223300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161116223300 is an abundant number, since it is smaller than the sum of its proper divisors (209071997200).

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

161116223300 is a wasteful number, since it uses less digits than its factorization.

161116223300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94774280 (or 94774273 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 161116223300 its reverse (3322611161), we get a palindrome (164438834461).

The spelling of 161116223300 in words is "one hundred sixty-one billion, one hundred sixteen million, two hundred twenty-three thousand, three hundred".