850528616765 has 4 divisors (see below), whose sum is σ = 1020634340124. Its totient is φ = 680422893408.

The previous prime is 850528616759. The next prime is 850528616807. The reversal of 850528616765 is 567616825058.

It is a happy number.

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 628630151044 + 221898465721 = 792862^2 + 471061^2 .

It is a cyclic number.

It is not a de Polignac number, because 850528616765 - 2⁶ = 850528616701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 85052861672 + ... + 85052861681.

It is an arithmetic number, because the mean of its divisors is an integer number (255158585031).

Almost surely, 2^850528616765 is an apocalyptic number.

It is an amenable number.

850528616765 is a deficient number, since it is larger than the sum of its proper divisors (170105723359).

850528616765 is a wasteful number, since it uses less digits than its factorization.

850528616765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170105723358.

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 850528616765 in words is "eight hundred fifty billion, five hundred twenty-eight million, six hundred sixteen thousand, seven hundred sixty-five".