238455641971 has 2 divisors, whose sum is σ = 238455641972. Its totient is φ = 238455641970.

The previous prime is 238455641933. The next prime is 238455642049. The reversal of 238455641971 is 179146554832.

238455641971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238455641971 - 2²⁵ = 238422087539 is a prime.

It is a super-2 number, since 2×238455641971² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238455644971) 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, 119227820985 + 119227820986.

It is an arithmetic number, because the mean of its divisors is an integer number (119227820986).

Almost surely, 2^238455641971 is an apocalyptic number.

238455641971 is a deficient number, since it is larger than the sum of its proper divisors (1).

238455641971 is an equidigital number, since it uses as much as digits as its factorization.

238455641971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 55.

The spelling of 238455641971 in words is "two hundred thirty-eight billion, four hundred fifty-five million, six hundred forty-one thousand, nine hundred seventy-one".