16683819919944 has 32 divisors (see below), whose sum is σ = 41714093379840. Its totient is φ = 5560667496000.

The previous prime is 16683819919933. The next prime is 16683819919981. The reversal of 16683819919944 is 44991991838661.

It is a super-2 number, since 2×16683819919944² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16683819919944.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37638232 + ... + 38078919.

It is an arithmetic number, because the mean of its divisors is an integer number (1303565418120).

Almost surely, 2^{16683819919944} is an apocalyptic number.

It is an amenable number.

16683819919944 is an abundant number, since it is smaller than the sum of its proper divisors (25030273459896).

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

16683819919944 is a wasteful number, since it uses less digits than its factorization.

16683819919944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75726341 (or 75726337 counting only the distinct ones).

The product of its digits is 725594112, while the sum is 78.

The spelling of 16683819919944 in words is "sixteen trillion, six hundred eighty-three billion, eight hundred nineteen million, nine hundred nineteen thousand, nine hundred forty-four".