21536200336 has 40 divisors (see below), whose sum is σ = 47739873024. Its totient is φ = 9219624960.

The previous prime is 21536200333. The next prime is 21536200379. The reversal of 21536200336 is 63300263512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21536200298 and 21536200307.

It is not an unprimeable number, because it can be changed into a prime (21536200333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505 + ... + 207568.

Almost surely, 2^21536200336 is an apocalyptic number.

It is an amenable number.

21536200336 is an abundant number, since it is smaller than the sum of its proper divisors (26203672688).

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

21536200336 is a wasteful number, since it uses less digits than its factorization.

21536200336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211999 (or 211993 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 21536200336 its reverse (63300263512), we get a palindrome (84836463848).

The spelling of 21536200336 in words is "twenty-one billion, five hundred thirty-six million, two hundred thousand, three hundred thirty-six".