850555509256 has 8 divisors (see below), whose sum is σ = 1594791579870. Its totient is φ = 425277754624.

The previous prime is 850555509241. The next prime is 850555509319. The reversal of 850555509256 is 652905555058.

It can be written as a sum of positive squares in only one way, i.e., 849328128100 + 1227381156 = 921590^2 + 35034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 850555509197 and 850555509206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53159719321 + ... + 53159719336.

Almost surely, 2^850555509256 is an apocalyptic number.

It is an amenable number.

850555509256 is a deficient number, since it is larger than the sum of its proper divisors (744236070614).

850555509256 is a wasteful number, since it uses less digits than its factorization.

850555509256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106319438663 (or 106319438659 counting only the distinct ones).

The product of its (nonzero) digits is 13500000, while the sum is 55.

The spelling of 850555509256 in words is "eight hundred fifty billion, five hundred fifty-five million, five hundred nine thousand, two hundred fifty-six".