16681879950 has 24 divisors (see below), whose sum is σ = 41371062648. Its totient is φ = 4448501280.

The previous prime is 16681879927. The next prime is 16681879987. The reversal of 16681879950 is 5997818661.

It is a congruent number.

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, 55606117 + ... + 55606416.

It is an arithmetic number, because the mean of its divisors is an integer number (1723794277).

Almost surely, 2^16681879950 is an apocalyptic number.

16681879950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16681879950 is an abundant number, since it is smaller than the sum of its proper divisors (24689182698).

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

16681879950 is a wasteful number, since it uses less digits than its factorization.

16681879950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111212548 (or 111212543 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 60.

The spelling of 16681879950 in words is "sixteen billion, six hundred eighty-one million, eight hundred seventy-nine thousand, nine hundred fifty".