85109714177 has 4 divisors (see below), whose sum is σ = 85111450116. Its totient is φ = 85107978240.

The previous prime is 85109714161. The next prime is 85109714189. The reversal of 85109714177 is 77141790158.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23999896561 + 61109817616 = 154919^2 + 247204^2 .

It is a cyclic number.

It is not a de Polignac number, because 85109714177 - 2⁴ = 85109714161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85109710177) 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, 792224 + ... + 893217.

It is an arithmetic number, because the mean of its divisors is an integer number (21277862529).

Almost surely, 2^85109714177 is an apocalyptic number.

It is an amenable number.

85109714177 is a deficient number, since it is larger than the sum of its proper divisors (1735939).

85109714177 is a wasteful number, since it uses less digits than its factorization.

85109714177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735938.

The product of its (nonzero) digits is 493920, while the sum is 50.

The spelling of 85109714177 in words is "eighty-five billion, one hundred nine million, seven hundred fourteen thousand, one hundred seventy-seven".