11845722789 has 12 divisors (see below), whose sum is σ = 17117616672. Its totient is φ = 7893858600.

The previous prime is 11845722667. The next prime is 11845722793. The reversal of 11845722789 is 98722754811.

11845722789 is a `hidden beast` number, since 118 + 457 + 2 + 2 + 78 + 9 = 666.

It is not a de Polignac number, because 11845722789 - 2¹² = 11845718693 is a prime.

It is a super-2 number, since 2×11845722789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11845712789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251257 + ... + 294654.

It is an arithmetic number, because the mean of its divisors is an integer number (1426468056).

Almost surely, 2^11845722789 is an apocalyptic number.

It is an amenable number.

11845722789 is a deficient number, since it is larger than the sum of its proper divisors (5271893883).

11845722789 is a wasteful number, since it uses less digits than its factorization.

11845722789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548328 (or 548325 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

It can be divided in two parts, 118457 and 22789, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 11845722789 in words is "eleven billion, eight hundred forty-five million, seven hundred twenty-two thousand, seven hundred eighty-nine".