85417682377 has 4 divisors (see below), whose sum is σ = 85470378436. Its totient is φ = 85364986320.

The previous prime is 85417682353. The next prime is 85417682423. The reversal of 85417682377 is 77328671458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77328671458 = 2 ⋅38664335729.

It can be written as a sum of positive squares in 2 ways, for example, as 66017649721 + 19400032656 = 256939^2 + 139284^2 .

It is a cyclic number.

It is not a de Polignac number, because 85417682377 - 2¹⁹ = 85417158089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85417662377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26345598 + ... + 26348839.

It is an arithmetic number, because the mean of its divisors is an integer number (21367594609).

Almost surely, 2^85417682377 is an apocalyptic number.

It is an amenable number.

85417682377 is a deficient number, since it is larger than the sum of its proper divisors (52696059).

85417682377 is a wasteful number, since it uses less digits than its factorization.

85417682377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52696058.

The product of its digits is 15805440, while the sum is 58.

The spelling of 85417682377 in words is "eighty-five billion, four hundred seventeen million, six hundred eighty-two thousand, three hundred seventy-seven".