21336311363 has 24 divisors (see below), whose sum is σ = 22911193872. Its totient is φ = 19864408064.

The previous prime is 21336311327. The next prime is 21336311371. The reversal of 21336311363 is 36311363312.

It is not a de Polignac number, because 21336311363 - 2⁸ = 21336311107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21336311303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13737995 + ... + 13739547.

It is an arithmetic number, because the mean of its divisors is an integer number (954633078).

Almost surely, 2^21336311363 is an apocalyptic number.

21336311363 is a deficient number, since it is larger than the sum of its proper divisors (1574882509).

21336311363 is a wasteful number, since it uses less digits than its factorization.

21336311363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2054 counting only the distinct ones).

The product of its digits is 17496, while the sum is 32.

Adding to 21336311363 its reverse (36311363312), we get a palindrome (57647674675).

The spelling of 21336311363 in words is "twenty-one billion, three hundred thirty-six million, three hundred eleven thousand, three hundred sixty-three".