16919856120 has 64 divisors (see below), whose sum is σ = 51208809120. Its totient is φ = 4472029184.

The previous prime is 16919856061. The next prime is 16919856139. The reversal of 16919856120 is 2165891961.

It is a super-2 number, since 2×16919856120² (a number of 21 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 16919856120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610329 + ... + 637448.

Almost surely, 2^16919856120 is an apocalyptic number.

16919856120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16919856120 is an abundant number, since it is smaller than the sum of its proper divisors (34288953000).

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

16919856120 is a wasteful number, since it uses less digits than its factorization.

16919856120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247904 (or 1247900 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 16919856120 in words is "sixteen billion, nine hundred nineteen million, eight hundred fifty-six thousand, one hundred twenty".