811105849256 has 16 divisors (see below), whose sum is σ = 1520833036500. Its totient is φ = 405550372864.

The previous prime is 811105849249. The next prime is 811105849331. The reversal of 811105849256 is 652948501118.

It can be written as a sum of positive squares in 2 ways, for example, as 693779048356 + 117326800900 = 832934^2 + 342530^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2232296 + ... + 2570088.

Almost surely, 2^811105849256 is an apocalyptic number.

It is an amenable number.

811105849256 is a deficient number, since it is larger than the sum of its proper divisors (709727187244).

811105849256 is a wasteful number, since it uses less digits than its factorization.

811105849256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637948 (or 637944 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 50.

The spelling of 811105849256 in words is "eight hundred eleven billion, one hundred five million, eight hundred forty-nine thousand, two hundred fifty-six".