85716394459 has 4 divisors (see below), whose sum is σ = 85794107616. Its totient is φ = 85638681304.

The previous prime is 85716394451. The next prime is 85716394483. The reversal of 85716394459 is 95449361758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85716394459 - 2³ = 85716394451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85716394397 and 85716394406.

It is not an unprimeable number, because it can be changed into a prime (85716394451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38854924 + ... + 38857129.

It is an arithmetic number, because the mean of its divisors is an integer number (21448526904).

Almost surely, 2^85716394459 is an apocalyptic number.

85716394459 is a deficient number, since it is larger than the sum of its proper divisors (77713157).

85716394459 is a wasteful number, since it uses less digits than its factorization.

85716394459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77713156.

The product of its digits is 32659200, while the sum is 61.

The spelling of 85716394459 in words is "eighty-five billion, seven hundred sixteen million, three hundred ninety-four thousand, four hundred fifty-nine".