21336464017 has 32 divisors (see below), whose sum is σ = 24039936000. Its totient is φ = 18773389440.

The previous prime is 21336463979. The next prime is 21336464021. The reversal of 21336464017 is 71046463312.

It is a cyclic number.

It is not a de Polignac number, because 21336464017 - 2¹¹ = 21336461969 is a prime.

It is a super-3 number, since 3×21336464017³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21336464047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11354284 + ... + 11356162.

It is an arithmetic number, because the mean of its divisors is an integer number (751248000).

Almost surely, 2^21336464017 is an apocalyptic number.

It is an amenable number.

21336464017 is a deficient number, since it is larger than the sum of its proper divisors (2703471983).

21336464017 is a wasteful number, since it uses less digits than its factorization.

21336464017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 21336464017 in words is "twenty-one billion, three hundred thirty-six million, four hundred sixty-four thousand, seventeen".