238065771308285 has 4 divisors (see below), whose sum is σ = 285678925569948. Its totient is φ = 190452617046624.

The previous prime is 238065771308207. The next prime is 238065771308327. The reversal of 238065771308285 is 582803177560832.

238065771308285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178585243689241 + 59480527619044 = 13363579^2 + 7712362^2 .

It is a cyclic number.

It is not a de Polignac number, because 238065771308285 - 2¹² = 238065771304189 is a prime.

It is a super-2 number, since 2×238065771308285² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23806577130824 + ... + 23806577130833.

It is an arithmetic number, because the mean of its divisors is an integer number (71419731392487).

Almost surely, 2^{238065771308285} is an apocalyptic number.

It is an amenable number.

238065771308285 is a deficient number, since it is larger than the sum of its proper divisors (47613154261663).

238065771308285 is an equidigital number, since it uses as much as digits as its factorization.

238065771308285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47613154261662.

The product of its (nonzero) digits is 135475200, while the sum is 65.

The spelling of 238065771308285 in words is "two hundred thirty-eight trillion, sixty-five billion, seven hundred seventy-one million, three hundred eight thousand, two hundred eighty-five".