85012863239 has 2 divisors, whose sum is σ = 85012863240. Its totient is φ = 85012863238.

The previous prime is 85012863223. The next prime is 85012863251. The reversal of 85012863239 is 93236821058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85012863239 - 2⁴ = 85012863223 is a prime.

It is a super-2 number, since 2×85012863239² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85012863193 and 85012863202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85012863209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42506431619 + 42506431620.

It is an arithmetic number, because the mean of its divisors is an integer number (42506431620).

Almost surely, 2^85012863239 is an apocalyptic number.

85012863239 is a deficient number, since it is larger than the sum of its proper divisors (1).

85012863239 is an equidigital number, since it uses as much as digits as its factorization.

85012863239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 85012863239 in words is "eighty-five billion, twelve million, eight hundred sixty-three thousand, two hundred thirty-nine".