16441225218 has 24 divisors (see below), whose sum is σ = 38861078256. Its totient is φ = 4982189400.

The previous prime is 16441225211. The next prime is 16441225237. The reversal of 16441225218 is 81252214461.

16441225218 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 122 + 521 + 8 = 666.

It is a super-3 number, since 3×16441225218³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16441225211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41518048 + ... + 41518443.

It is an arithmetic number, because the mean of its divisors is an integer number (1619211594).

Almost surely, 2^16441225218 is an apocalyptic number.

16441225218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16441225218 is an abundant number, since it is smaller than the sum of its proper divisors (22419853038).

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

16441225218 is a wasteful number, since it uses less digits than its factorization.

16441225218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83036510 (or 83036507 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

Adding to 16441225218 its reverse (81252214461), we get a palindrome (97693439679).

The spelling of 16441225218 in words is "sixteen billion, four hundred forty-one million, two hundred twenty-five thousand, two hundred eighteen".