239538515885 has 4 divisors (see below), whose sum is σ = 287446219068. Its totient is φ = 191630812704.

The previous prime is 239538515873. The next prime is 239538515893. The reversal of 239538515885 is 588515835932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183578828521 + 55959687364 = 428461^2 + 236558^2 .

It is a cyclic number.

It is not a de Polignac number, because 239538515885 - 2¹⁰ = 239538514861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23953851584 + ... + 23953851593.

It is an arithmetic number, because the mean of its divisors is an integer number (71861554767).

Almost surely, 2^239538515885 is an apocalyptic number.

It is an amenable number.

239538515885 is a deficient number, since it is larger than the sum of its proper divisors (47907703183).

239538515885 is an equidigital number, since it uses as much as digits as its factorization.

239538515885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47907703182.

The product of its digits is 51840000, while the sum is 62.

The spelling of 239538515885 in words is "two hundred thirty-nine billion, five hundred thirty-eight million, five hundred fifteen thousand, eight hundred eighty-five".