850729180289 has 2 divisors, whose sum is σ = 850729180290. Its totient is φ = 850729180288.

The previous prime is 850729180271. The next prime is 850729180319. The reversal of 850729180289 is 982081927058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850572730225 + 156450064 = 922265^2 + 12508^2 .

It is a cyclic number.

It is not a de Polignac number, because 850729180289 - 2³² = 846434212993 is a prime.

It is a super-2 number, since 2×850729180289² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (850729180789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425364590144 + 425364590145.

It is an arithmetic number, because the mean of its divisors is an integer number (425364590145).

Almost surely, 2^850729180289 is an apocalyptic number.

It is an amenable number.

850729180289 is a deficient number, since it is larger than the sum of its proper divisors (1).

850729180289 is an equidigital number, since it uses as much as digits as its factorization.

850729180289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 850729180289 in words is "eight hundred fifty billion, seven hundred twenty-nine million, one hundred eighty thousand, two hundred eighty-nine".