16868516850 has 72 divisors (see below), whose sum is σ = 45341562240. Its totient is φ = 4496139360.

The previous prime is 16868516839. The next prime is 16868516851. The reversal of 16868516850 is 5861586861.

16868516850 is a `hidden beast` number, since 1 + 68 + 68 + 516 + 8 + 5 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16868516851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1093491 + ... + 1108809.

It is an arithmetic number, because the mean of its divisors is an integer number (629743920).

Almost surely, 2^16868516850 is an apocalyptic number.

16868516850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16868516850 is an abundant number, since it is smaller than the sum of its proper divisors (28473045390).

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

16868516850 is a wasteful number, since it uses less digits than its factorization.

16868516850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17784 (or 17776 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 16868516850 in words is "sixteen billion, eight hundred sixty-eight million, five hundred sixteen thousand, eight hundred fifty".