770173165085 has 4 divisors (see below), whose sum is σ = 924207798108. Its totient is φ = 616138532064.

The previous prime is 770173165067. The next prime is 770173165189. The reversal of 770173165085 is 580561371077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580561371077 = 1013 ⋅573110929.

It can be written as a sum of positive squares in 2 ways, for example, as 558037386361 + 212135778724 = 747019^2 + 460582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770173165085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77017316504 + ... + 77017316513.

It is an arithmetic number, because the mean of its divisors is an integer number (231051949527).

Almost surely, 2^770173165085 is an apocalyptic number.

It is an amenable number.

770173165085 is a deficient number, since it is larger than the sum of its proper divisors (154034633023).

770173165085 is a wasteful number, since it uses less digits than its factorization.

770173165085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154034633022.

The product of its (nonzero) digits is 1234800, while the sum is 50.

The spelling of 770173165085 in words is "seven hundred seventy billion, one hundred seventy-three million, one hundred sixty-five thousand, eighty-five".