16636224442 has 8 divisors (see below), whose sum is σ = 24955097076. Its totient is φ = 8317858752.

The previous prime is 16636224403. The next prime is 16636224443. The reversal of 16636224442 is 24442263661.

It can be written as a sum of positive squares in 2 ways, for example, as 11359509561 + 5276714881 = 106581^2 + 72641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16636224442² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16636224395 and 16636224404.

It is not an unprimeable number, because it can be changed into a prime (16636224443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29893 + ... + 184840.

Almost surely, 2^16636224442 is an apocalyptic number.

16636224442 is a deficient number, since it is larger than the sum of its proper divisors (8318872634).

16636224442 is a wasteful number, since it uses less digits than its factorization.

16636224442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253472.

The product of its digits is 331776, while the sum is 40.

The spelling of 16636224442 in words is "sixteen billion, six hundred thirty-six million, two hundred twenty-four thousand, four hundred forty-two".