85520087039 has 2 divisors, whose sum is σ = 85520087040. Its totient is φ = 85520087038.

The previous prime is 85520087027. The next prime is 85520087041. The reversal of 85520087039 is 93078002558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85520087039 - 2⁸ = 85520086783 is a prime.

Together with 85520087041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85520086984 and 85520087002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85520086039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42760043519 + 42760043520.

It is an arithmetic number, because the mean of its divisors is an integer number (42760043520).

Almost surely, 2^85520087039 is an apocalyptic number.

85520087039 is a deficient number, since it is larger than the sum of its proper divisors (1).

85520087039 is an equidigital number, since it uses as much as digits as its factorization.

85520087039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 85520087039 in words is "eighty-five billion, five hundred twenty million, eighty-seven thousand, thirty-nine".