11785707844 has 81 divisors (see below), whose sum is σ = 22861081341. Its totient is φ = 5315195520.

The previous prime is 11785707841. The next prime is 11785707853. The reversal of 11785707844 is 44870758711.

The square root of 11785707844 is 108562.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9175724100 + 2609983744 = 95790^2 + 51088^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11785707791 and 11785707800.

It is not an unprimeable number, because it can be changed into a prime (11785707841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 114424297 + ... + 114424399.

Almost surely, 2^11785707844 is an apocalyptic number.

11785707844 is the 108562-nd square number.

It is an amenable number.

11785707844 is a deficient number, since it is larger than the sum of its proper divisors (11075373497).

11785707844 is a wasteful number, since it uses less digits than its factorization.

11785707844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 52.

The spelling of 11785707844 in words is "eleven billion, seven hundred eighty-five million, seven hundred seven thousand, eight hundred forty-four".