87159796169 has 2 divisors, whose sum is σ = 87159796170. Its totient is φ = 87159796168.

The previous prime is 87159796159. The next prime is 87159796181. The reversal of 87159796169 is 96169795178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70158765625 + 17001030544 = 264875^2 + 130388^2 .

It is a cyclic number.

It is not a de Polignac number, because 87159796169 - 2⁴ = 87159796153 is a prime.

It is a super-2 number, since 2×87159796169² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87159796099 and 87159796108.

It is not a weakly prime, because it can be changed into another prime (87159796159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43579898084 + 43579898085.

It is an arithmetic number, because the mean of its divisors is an integer number (43579898085).

Almost surely, 2^87159796169 is an apocalyptic number.

It is an amenable number.

87159796169 is a deficient number, since it is larger than the sum of its proper divisors (1).

87159796169 is an equidigital number, since it uses as much as digits as its factorization.

87159796169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51438240, while the sum is 68.

Subtracting 87159796169 from its reverse (96169795178), we obtain a palindrome (9009999009).

The spelling of 87159796169 in words is "eighty-seven billion, one hundred fifty-nine million, seven hundred ninety-six thousand, one hundred sixty-nine".