238718066475685 has 64 divisors (see below), whose sum is σ = 303898450673664. Its totient is φ = 179798040576000.

The previous prime is 238718066475659. The next prime is 238718066475827. The reversal of 238718066475685 is 586574660817832.

It is a happy number.

It is not a de Polignac number, because 238718066475685 - 2¹⁵ = 238718066442917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3108229285 + ... + 3108306085.

It is an arithmetic number, because the mean of its divisors is an integer number (4748413291776).

Almost surely, 2^{238718066475685} is an apocalyptic number.

It is an amenable number.

238718066475685 is a deficient number, since it is larger than the sum of its proper divisors (65180384197979).

238718066475685 is a wasteful number, since it uses less digits than its factorization.

238718066475685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81554.

The product of its (nonzero) digits is 3251404800, while the sum is 76.

The spelling of 238718066475685 in words is "two hundred thirty-eight trillion, seven hundred eighteen billion, sixty-six million, four hundred seventy-five thousand, six hundred eighty-five".