16668316850 has 24 divisors (see below), whose sum is σ = 31840993668. Its totient is φ = 6487128000.

The previous prime is 16668316849. The next prime is 16668316891. The reversal of 16668316850 is 5861386661.

It can be written as a sum of positive squares in 6 ways, for example, as 12357212569 + 4311104281 = 111163^2 + 65659^2 .

It is a super-2 number, since 2×16668316850² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4503101 + ... + 4506800.

Almost surely, 2^16668316850 is an apocalyptic number.

16668316850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668316850 is a deficient number, since it is larger than the sum of its proper divisors (15172676818).

16668316850 is a wasteful number, since it uses less digits than its factorization.

16668316850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009950 (or 9009945 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 16668316850 in words is "sixteen billion, six hundred sixty-eight million, three hundred sixteen thousand, eight hundred fifty".