26531970171169 has 2 divisors, whose sum is σ = 26531970171170. Its totient is φ = 26531970171168.

The previous prime is 26531970171107. The next prime is 26531970171227. The reversal of 26531970171169 is 96117107913562.

It is an a-pointer prime, because the next prime (26531970171227) can be obtained adding 26531970171169 to its sum of digits (58).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26280868961169 + 251101210000 = 5126487^2 + 501100^2 .

It is a cyclic number.

It is not a de Polignac number, because 26531970171169 - 2¹³ = 26531970162977 is a prime.

It is a super-2 number, since 2×26531970171169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26531970171269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13265985085584 + 13265985085585.

It is an arithmetic number, because the mean of its divisors is an integer number (13265985085585).

Almost surely, 2^{26531970171169} is an apocalyptic number.

It is an amenable number.

26531970171169 is a deficient number, since it is larger than the sum of its proper divisors (1).

26531970171169 is an equidigital number, since it uses as much as digits as its factorization.

26531970171169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 26531970171169 in words is "twenty-six trillion, five hundred thirty-one billion, nine hundred seventy million, one hundred seventy-one thousand, one hundred sixty-nine".