238718066475827 has 2 divisors, whose sum is σ = 238718066475828. Its totient is φ = 238718066475826.

The previous prime is 238718066475659. The next prime is 238718066475881. The reversal of 238718066475827 is 728574660817832.

238718066475827 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 is a cyclic number.

It is not a de Polignac number, because 238718066475827 - 2²⁰ = 238718065427251 is a prime.

It is not a weakly prime, because it can be changed into another prime (238718066475887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119359033237913 + 119359033237914.

It is an arithmetic number, because the mean of its divisors is an integer number (119359033237914).

Almost surely, 2^{238718066475827} is an apocalyptic number.

238718066475827 is a deficient number, since it is larger than the sum of its proper divisors (1).

238718066475827 is an equidigital number, since it uses as much as digits as its factorization.

238718066475827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1517322240, while the sum is 74.

The spelling of 238718066475827 in words is "two hundred thirty-eight trillion, seven hundred eighteen billion, sixty-six million, four hundred seventy-five thousand, eight hundred twenty-seven".