21536063512 has 16 divisors (see below), whose sum is σ = 40382511840. Its totient is φ = 10767393696.

The previous prime is 21536063509. The next prime is 21536063519.

21536063512 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21536063519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83298 + ... + 223630.

It is an arithmetic number, because the mean of its divisors is an integer number (2523906990).

Almost surely, 2^21536063512 is an apocalyptic number.

It is an amenable number.

21536063512 is a deficient number, since it is larger than the sum of its proper divisors (18846448328).

21536063512 is a wasteful number, since it uses less digits than its factorization.

21536063512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159522 (or 159518 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

It can be divided in two parts, 215360 and 63512, that added together give a palindrome (278872).

The spelling of 21536063512 in words is "twenty-one billion, five hundred thirty-six million, sixty-three thousand, five hundred twelve".