16442621222300 has 216 divisors, whose sum is σ = 45678356085600. Its totient is φ = 5024375516160.

The previous prime is 16442621222281. The next prime is 16442621222323. The reversal of 16442621222300 is 322212624461.

It is a super-3 number, since 3×16442621222300³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1034306 + ... + 5827094.

Almost surely, 2^{16442621222300} is an apocalyptic number.

16442621222300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16442621222300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22839178042800).

16442621222300 is an abundant number, since it is smaller than the sum of its proper divisors (29235734863300).

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

16442621222300 is a wasteful number, since it uses less digits than its factorization.

16442621222300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792865 (or 4792845 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 16442621222300 its reverse (322212624461), we get a palindrome (16764833846761).

The spelling of 16442621222300 in words is "sixteen trillion, four hundred forty-two billion, six hundred twenty-one million, two hundred twenty-two thousand, three hundred".