21314134617 has 16 divisors (see below), whose sum is σ = 28610265600. Its totient is φ = 14113999872.

The previous prime is 21314134613. The next prime is 21314134619. The reversal of 21314134617 is 71643141312.

It is not a de Polignac number, because 21314134617 - 2² = 21314134613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21314134613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264903 + ... + 335859.

It is an arithmetic number, because the mean of its divisors is an integer number (1788141600).

Almost surely, 2^21314134617 is an apocalyptic number.

It is an amenable number.

21314134617 is a deficient number, since it is larger than the sum of its proper divisors (7296130983).

21314134617 is a wasteful number, since it uses less digits than its factorization.

21314134617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71632.

The product of its digits is 12096, while the sum is 33.

Adding to 21314134617 its reverse (71643141312), we get a palindrome (92957275929).

The spelling of 21314134617 in words is "twenty-one billion, three hundred fourteen million, one hundred thirty-four thousand, six hundred seventeen".