238867760811709 has 2 divisors, whose sum is σ = 238867760811710. Its totient is φ = 238867760811708.

The previous prime is 238867760811643. The next prime is 238867760811721. The reversal of 238867760811709 is 907118067768832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225846705070809 + 13021055740900 = 15028197^2 + 3608470^2 .

It is a cyclic number.

It is not a de Polignac number, because 238867760811709 - 2²³ = 238867752423101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238867730811709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119433880405854 + 119433880405855.

It is an arithmetic number, because the mean of its divisors is an integer number (119433880405855).

Almost surely, 2^{238867760811709} is an apocalyptic number.

It is an amenable number.

238867760811709 is a deficient number, since it is larger than the sum of its proper divisors (1).

238867760811709 is an equidigital number, since it uses as much as digits as its factorization.

238867760811709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 341397504, while the sum is 73.

The spelling of 238867760811709 in words is "two hundred thirty-eight trillion, eight hundred sixty-seven billion, seven hundred sixty million, eight hundred eleven thousand, seven hundred nine".