85865512562959 has 2 divisors, whose sum is σ = 85865512562960. Its totient is φ = 85865512562958.

The previous prime is 85865512562873. The next prime is 85865512562969. The reversal of 85865512562959 is 95926521556858.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85865512562959 - 2⁴¹ = 83666489307407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85865512562969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42932756281479 + 42932756281480.

It is an arithmetic number, because the mean of its divisors is an integer number (42932756281480).

Almost surely, 2^{85865512562959} is an apocalyptic number.

85865512562959 is a deficient number, since it is larger than the sum of its proper divisors (1).

85865512562959 is an equidigital number, since it uses as much as digits as its factorization.

85865512562959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800000, while the sum is 76.

The spelling of 85865512562959 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred twelve million, five hundred sixty-two thousand, nine hundred fifty-nine".