16281687366 has 240 divisors, whose sum is σ = 45780078960. Its totient is φ = 4297950720.

The previous prime is 16281687361. The next prime is 16281687371. The reversal of 16281687366 is 66378618261.

16281687366 is a `hidden beast` number, since 1 + 628 + 1 + 6 + 8 + 7 + 3 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16281687361) and next prime (16281687371).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16281687361) 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 119 ways as a sum of consecutive naturals, for example, 6182386 + ... + 6185018.

It is an arithmetic number, because the mean of its divisors is an integer number (190750329).

Almost surely, 2^16281687366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16281687366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22890039480).

16281687366 is an abundant number, since it is smaller than the sum of its proper divisors (29498391594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16281687366 is a wasteful number, since it uses less digits than its factorization.

16281687366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721 (or 2705 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 16281687366 in words is "sixteen billion, two hundred eighty-one million, six hundred eighty-seven thousand, three hundred sixty-six".