85987916239 has 2 divisors, whose sum is σ = 85987916240. Its totient is φ = 85987916238.

The previous prime is 85987916237. The next prime is 85987916263. The reversal of 85987916239 is 93261978958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85987916239 - 2¹ = 85987916237 is a prime.

Together with 85987916237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85987916237) 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, 42993958119 + 42993958120.

It is an arithmetic number, because the mean of its divisors is an integer number (42993958120).

Almost surely, 2^85987916239 is an apocalyptic number.

85987916239 is a deficient number, since it is larger than the sum of its proper divisors (1).

85987916239 is an equidigital number, since it uses as much as digits as its factorization.

85987916239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 67.

The spelling of 85987916239 in words is "eighty-five billion, nine hundred eighty-seven million, nine hundred sixteen thousand, two hundred thirty-nine".