21032032106717 has 2 divisors, whose sum is σ = 21032032106718. Its totient is φ = 21032032106716.

The previous prime is 21032032106663. The next prime is 21032032106779. The reversal of 21032032106717 is 71760123023012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20300620595641 + 731411511076 = 4505621^2 + 855226^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032032106717 - 2²⁰ = 21032031058141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032032106017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516016053358 + 10516016053359.

It is an arithmetic number, because the mean of its divisors is an integer number (10516016053359).

Almost surely, 2^{21032032106717} is an apocalyptic number.

It is an amenable number.

21032032106717 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032032106717 is an equidigital number, since it uses as much as digits as its factorization.

21032032106717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

Adding to 21032032106717 its reverse (71760123023012), we get a palindrome (92792155129729).

The spelling of 21032032106717 in words is "twenty-one trillion, thirty-two billion, thirty-two million, one hundred six thousand, seven hundred seventeen".