85306816387 has 16 divisors (see below), whose sum is σ = 92735954080. Its totient is φ = 78001926912.

The previous prime is 85306816373. The next prime is 85306816423. The reversal of 85306816387 is 78361860358.

It is not a de Polignac number, because 85306816387 - 2²³ = 85298427779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85306816327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9281008 + ... + 9290194.

It is an arithmetic number, because the mean of its divisors is an integer number (5795997130).

Almost surely, 2^85306816387 is an apocalyptic number.

85306816387 is a deficient number, since it is larger than the sum of its proper divisors (7429137693).

85306816387 is a wasteful number, since it uses less digits than its factorization.

85306816387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15862.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 85306816387 in words is "eighty-five billion, three hundred six million, eight hundred sixteen thousand, three hundred eighty-seven".