239135876716181 has 2 divisors, whose sum is σ = 239135876716182. Its totient is φ = 239135876716180.

The previous prime is 239135876716147. The next prime is 239135876716283. The reversal of 239135876716181 is 181617678531932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233052007813681 + 6083868902500 = 15266041^2 + 2466550^2 .

It is a cyclic number.

It is not a de Polignac number, because 239135876716181 - 2¹⁸ = 239135876454037 is a prime.

It is a super-2 number, since 2×239135876716181² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239135876712181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119567938358090 + 119567938358091.

It is an arithmetic number, because the mean of its divisors is an integer number (119567938358091).

Almost surely, 2^{239135876716181} is an apocalyptic number.

It is an amenable number.

239135876716181 is a deficient number, since it is larger than the sum of its proper divisors (1).

239135876716181 is an equidigital number, since it uses as much as digits as its factorization.

239135876716181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 68.

The spelling of 239135876716181 in words is "two hundred thirty-nine trillion, one hundred thirty-five billion, eight hundred seventy-six million, seven hundred sixteen thousand, one hundred eighty-one".