16668351850 has 48 divisors (see below), whose sum is σ = 32368553280. Its totient is φ = 6374016000.

The previous prime is 16668351841. The next prime is 16668351859. The reversal of 16668351850 is 5815386661.

It is an interprime number because it is at equal distance from previous prime (16668351841) and next prime (16668351859).

It is a junction number, because it is equal to n+sod(n) for n = 16668351794 and 16668351803.

It is not an unprimeable number, because it can be changed into a prime (16668351859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3469450 + ... + 3474250.

It is an arithmetic number, because the mean of its divisors is an integer number (674344860).

Almost surely, 2^16668351850 is an apocalyptic number.

16668351850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668351850 is a deficient number, since it is larger than the sum of its proper divisors (15700201430).

16668351850 is a wasteful number, since it uses less digits than its factorization.

16668351850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855 (or 7850 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 16668351850 in words is "sixteen billion, six hundred sixty-eight million, three hundred fifty-one thousand, eight hundred fifty".