133475568169 has 2 divisors, whose sum is σ = 133475568170. Its totient is φ = 133475568168.

The previous prime is 133475568143. The next prime is 133475568181. The reversal of 133475568169 is 961865574331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86174538025 + 47301030144 = 293555^2 + 217488^2 .

It is a cyclic number.

It is not a de Polignac number, because 133475568169 - 2⁹ = 133475567657 is a prime.

It is a super-2 number, since 2×133475568169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133475568199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66737784084 + 66737784085.

It is an arithmetic number, because the mean of its divisors is an integer number (66737784085).

Almost surely, 2^133475568169 is an apocalyptic number.

It is an amenable number.

133475568169 is a deficient number, since it is larger than the sum of its proper divisors (1).

133475568169 is an equidigital number, since it uses as much as digits as its factorization.

133475568169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 58.

The spelling of 133475568169 in words is "one hundred thirty-three billion, four hundred seventy-five million, five hundred sixty-eight thousand, one hundred sixty-nine".