11866863445 has 8 divisors (see below), whose sum is σ = 14473683000. Its totient is φ = 9337859520.

The previous prime is 11866863439. The next prime is 11866863451. The reversal of 11866863445 is 54436866811.

It is an interprime number because it is at equal distance from previous prime (11866863439) and next prime (11866863451).

It can be written as a sum of positive squares in 4 ways, for example, as 141871921 + 11724991524 = 11911^2 + 108282^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11866863445 - 2¹¹ = 11866861397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11866863392 and 11866863401.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19453570 + ... + 19454179.

It is an arithmetic number, because the mean of its divisors is an integer number (1809210375).

Almost surely, 2^11866863445 is an apocalyptic number.

It is an amenable number.

11866863445 is a deficient number, since it is larger than the sum of its proper divisors (2606819555).

11866863445 is an equidigital number, since it uses as much as digits as its factorization.

11866863445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38907815.

The product of its digits is 3317760, while the sum is 52.

The spelling of 11866863445 in words is "eleven billion, eight hundred sixty-six million, eight hundred sixty-three thousand, four hundred forty-five".