850758315653 has 4 divisors (see below), whose sum is σ = 850918932300. Its totient is φ = 850597699008.

The previous prime is 850758315599. The next prime is 850758315677. The reversal of 850758315653 is 356513857058.

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 422601406084 + 428156909569 = 650078^2 + 654337^2 .

It is a cyclic number.

It is not a de Polignac number, because 850758315653 - 2²⁰ = 850757267077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850758375653) 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, 80300378 + ... + 80310971.

It is an arithmetic number, because the mean of its divisors is an integer number (212729733075).

Almost surely, 2^850758315653 is an apocalyptic number.

It is an amenable number.

850758315653 is a deficient number, since it is larger than the sum of its proper divisors (160616647).

850758315653 is a wasteful number, since it uses less digits than its factorization.

850758315653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160616646.

The product of its (nonzero) digits is 15120000, while the sum is 56.

The spelling of 850758315653 in words is "eight hundred fifty billion, seven hundred fifty-eight million, three hundred fifteen thousand, six hundred fifty-three".