235145066161 has 2 divisors, whose sum is σ = 235145066162. Its totient is φ = 235145066160.

The previous prime is 235145066137. The next prime is 235145066203. The reversal of 235145066161 is 161660541532.

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., 222270759936 + 12874306225 = 471456^2 + 113465^2 .

It is a cyclic number.

It is not a de Polignac number, because 235145066161 - 2³⁷ = 97706112689 is a prime.

It is a super-2 number, since 2×235145066161² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (236145066161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117572533080 + 117572533081.

It is an arithmetic number, because the mean of its divisors is an integer number (117572533081).

Almost surely, 2^235145066161 is an apocalyptic number.

It is an amenable number.

235145066161 is a deficient number, since it is larger than the sum of its proper divisors (1).

235145066161 is an equidigital number, since it uses as much as digits as its factorization.

235145066161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 235145066161 in words is "two hundred thirty-five billion, one hundred forty-five million, sixty-six thousand, one hundred sixty-one".