85665177027 has 24 divisors (see below), whose sum is σ = 128513249280. Its totient is φ = 54947620080.

The previous prime is 85665177007. The next prime is 85665177043. The reversal of 85665177027 is 72077156658.

It is a happy number.

85665177027 is a `hidden beast` number, since 8 + 56 + 6 + 517 + 70 + 2 + 7 = 666.

It is not a de Polignac number, because 85665177027 - 2¹⁴ = 85665160643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85665177007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1691299 + ... + 1741212.

It is an arithmetic number, because the mean of its divisors is an integer number (5354718720).

Almost surely, 2^85665177027 is an apocalyptic number.

85665177027 is a deficient number, since it is larger than the sum of its proper divisors (42848072253).

85665177027 is a wasteful number, since it uses less digits than its factorization.

85665177027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432623 (or 3432620 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The spelling of 85665177027 in words is "eighty-five billion, six hundred sixty-five million, one hundred seventy-seven thousand, twenty-seven".