11814385647861 has 24 divisors (see below), whose sum is σ = 17083931953920. Its totient is φ = 7867625665536.

The previous prime is 11814385647859. The next prime is 11814385647893. The reversal of 11814385647861 is 16874658341811.

It is a happy number.

11814385647861 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 4 + 3 + 8 + 564 + 7 + 8 + 61 = 666.

It is not a de Polignac number, because 11814385647861 - 2¹ = 11814385647859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11814385647811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46018510 + ... + 46274528.

It is an arithmetic number, because the mean of its divisors is an integer number (711830498080).

Almost surely, 2^{11814385647861} is an apocalyptic number.

It is an amenable number.

11814385647861 is a deficient number, since it is larger than the sum of its proper divisors (5269546306059).

11814385647861 is a wasteful number, since it uses less digits than its factorization.

11814385647861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261625 (or 261622 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 11814385647861 in words is "eleven trillion, eight hundred fourteen billion, three hundred eighty-five million, six hundred forty-seven thousand, eight hundred sixty-one".