847509090137 has 4 divisors (see below), whose sum is σ = 851900329140. Its totient is φ = 843117851136.

The previous prime is 847509090041. The next prime is 847509090143. The reversal of 847509090137 is 731090905748.

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 396107855641 + 451401234496 = 629371^2 + 671864^2 .

It is a cyclic number.

It is not a de Polignac number, because 847509090137 - 2²² = 847504895833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847509090157) by changing a digit.

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, 2195619212 + ... + 2195619597.

It is an arithmetic number, because the mean of its divisors is an integer number (212975082285).

Almost surely, 2^847509090137 is an apocalyptic number.

It is an amenable number.

847509090137 is a deficient number, since it is larger than the sum of its proper divisors (4391239003).

847509090137 is a wasteful number, since it uses less digits than its factorization.

847509090137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391239002.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 847509090137 in words is "eight hundred forty-seven billion, five hundred nine million, ninety thousand, one hundred thirty-seven".