16866287427 has 8 divisors (see below), whose sum is σ = 24532781760. Its totient is φ = 10221992360.

The previous prime is 16866287377. The next prime is 16866287483. The reversal of 16866287427 is 72478266861.

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

It is a cyclic number.

It is not a de Polignac number, because 16866287427 - 2¹⁰ = 16866286403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16866287497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255549777 + ... + 255549842.

It is an arithmetic number, because the mean of its divisors is an integer number (3066597720).

Almost surely, 2^16866287427 is an apocalyptic number.

16866287427 is a deficient number, since it is larger than the sum of its proper divisors (7666494333).

16866287427 is a wasteful number, since it uses less digits than its factorization.

16866287427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511099633.

The product of its digits is 10838016, while the sum is 57.

The spelling of 16866287427 in words is "sixteen billion, eight hundred sixty-six million, two hundred eighty-seven thousand, four hundred twenty-seven".