53662172131717 has 2 divisors, whose sum is σ = 53662172131718. Its totient is φ = 53662172131716.

The previous prime is 53662172131681. The next prime is 53662172131723. The reversal of 53662172131717 is 71713127126635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52191290717316 + 1470881414401 = 7224354^2 + 1212799^2 .

It is a cyclic number.

It is not a de Polignac number, because 53662172131717 - 2¹¹ = 53662172129669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53662172131727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26831086065858 + 26831086065859.

It is an arithmetic number, because the mean of its divisors is an integer number (26831086065859).

Almost surely, 2^{53662172131717} is an apocalyptic number.

It is an amenable number.

53662172131717 is a deficient number, since it is larger than the sum of its proper divisors (1).

53662172131717 is an equidigital number, since it uses as much as digits as its factorization.

53662172131717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 52.

The spelling of 53662172131717 in words is "fifty-three trillion, six hundred sixty-two billion, one hundred seventy-two million, one hundred thirty-one thousand, seven hundred seventeen".