235161662509 has 2 divisors, whose sum is σ = 235161662510. Its totient is φ = 235161662508.

The previous prime is 235161662497. The next prime is 235161662521. The reversal of 235161662509 is 905266161532.

It is a balanced prime because it is at equal distance from previous prime (235161662497) and next prime (235161662521).

It can be written as a sum of positive squares in only one way, i.e., 234640453609 + 521208900 = 484397^2 + 22830^2 .

It is a cyclic number.

It is not a de Polignac number, because 235161662509 - 2¹³ = 235161654317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235161662909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117580831254 + 117580831255.

It is an arithmetic number, because the mean of its divisors is an integer number (117580831255).

Almost surely, 2^235161662509 is an apocalyptic number.

It is an amenable number.

235161662509 is a deficient number, since it is larger than the sum of its proper divisors (1).

235161662509 is an equidigital number, since it uses as much as digits as its factorization.

235161662509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 235161662509 in words is "two hundred thirty-five billion, one hundred sixty-one million, six hundred sixty-two thousand, five hundred nine".