21614434511317 has 2 divisors, whose sum is σ = 21614434511318. Its totient is φ = 21614434511316.

The previous prime is 21614434511297. The next prime is 21614434511321. The reversal of 21614434511317 is 71311543441612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20342391144516 + 1272043366801 = 4510254^2 + 1127849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21614434511317 is a prime.

It is a super-4 number, since 4×21614434511317⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21614434518317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10807217255658 + 10807217255659.

It is an arithmetic number, because the mean of its divisors is an integer number (10807217255659).

Almost surely, 2^{21614434511317} is an apocalyptic number.

It is an amenable number.

21614434511317 is a deficient number, since it is larger than the sum of its proper divisors (1).

21614434511317 is an equidigital number, since it uses as much as digits as its factorization.

21614434511317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

Adding to 21614434511317 its reverse (71311543441612), we get a palindrome (92925977952929).

The spelling of 21614434511317 in words is "twenty-one trillion, six hundred fourteen billion, four hundred thirty-four million, five hundred eleven thousand, three hundred seventeen".