11844782811 has 48 divisors (see below), whose sum is σ = 18113711616. Its totient is φ = 7443583488.

The previous prime is 11844782779. The next prime is 11844782813. The reversal of 11844782811 is 11828744811.

11844782811 is a `hidden beast` number, since 118 + 447 + 82 + 8 + 11 = 666.

It is not a de Polignac number, because 11844782811 - 2⁵ = 11844782779 is a prime.

It is a super-2 number, since 2×11844782811² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11844782813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5279656 + ... + 5281898.

It is an arithmetic number, because the mean of its divisors is an integer number (377368992).

Almost surely, 2^11844782811 is an apocalyptic number.

11844782811 is a deficient number, since it is larger than the sum of its proper divisors (6268928805).

11844782811 is a wasteful number, since it uses less digits than its factorization.

11844782811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632 (or 2629 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The spelling of 11844782811 in words is "eleven billion, eight hundred forty-four million, seven hundred eighty-two thousand, eight hundred eleven".