235172222609 has 2 divisors, whose sum is σ = 235172222610. Its totient is φ = 235172222608.

The previous prime is 235172222569. The next prime is 235172222627. The reversal of 235172222609 is 906222271532.

235172222609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224063062609 + 11109160000 = 473353^2 + 105400^2 .

It is a cyclic number.

It is not a de Polignac number, because 235172222609 - 2²⁰ = 235171174033 is a prime.

It is not a weakly prime, because it can be changed into another prime (235172222699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117586111304 + 117586111305.

It is an arithmetic number, because the mean of its divisors is an integer number (117586111305).

Almost surely, 2^235172222609 is an apocalyptic number.

It is an amenable number.

235172222609 is a deficient number, since it is larger than the sum of its proper divisors (1).

235172222609 is an equidigital number, since it uses as much as digits as its factorization.

235172222609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 235172222609 in words is "two hundred thirty-five billion, one hundred seventy-two million, two hundred twenty-two thousand, six hundred nine".