11810856004 has 12 divisors (see below), whose sum is σ = 20952135484. Its totient is φ = 5824531584.

The previous prime is 11810855933. The next prime is 11810856007. The reversal of 11810856004 is 40065801811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5417254404 + 6393601600 = 73602^2 + 79960^2 .

It is not an unprimeable number, because it can be changed into a prime (11810856007) 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, 20223777 + ... + 20224360.

Almost surely, 2^11810856004 is an apocalyptic number.

It is an amenable number.

11810856004 is a deficient number, since it is larger than the sum of its proper divisors (9141279480).

11810856004 is a wasteful number, since it uses less digits than its factorization.

11810856004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40448214 (or 40448212 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 11810856004 in words is "eleven billion, eight hundred ten million, eight hundred fifty-six thousand, four".