21716430320713 has 16 divisors (see below), whose sum is σ = 23285301569280. Its totient is φ = 20179948928256.

The previous prime is 21716430320671. The next prime is 21716430320731. The reversal of 21716430320713 is 31702303461712.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21716430320713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21716430320813) 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 15 ways as a sum of consecutive naturals, for example, 141761706 + ... + 141914812.

It is an arithmetic number, because the mean of its divisors is an integer number (1455331348080).

Almost surely, 2^{21716430320713} is an apocalyptic number.

It is an amenable number.

21716430320713 is a deficient number, since it is larger than the sum of its proper divisors (1568871248567).

21716430320713 is a wasteful number, since it uses less digits than its factorization.

21716430320713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258816.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 21716430320713 in words is "twenty-one trillion, seven hundred sixteen billion, four hundred thirty million, three hundred twenty thousand, seven hundred thirteen".