16915680650 has 48 divisors (see below), whose sum is σ = 34460481888. Its totient is φ = 6126600000.

The previous prime is 16915680647. The next prime is 16915680703. The reversal of 16915680650 is 5608651961.

It is a super-2 number, since 2×16915680650² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16915680595 and 16915680604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76784 + ... + 199316.

It is an arithmetic number, because the mean of its divisors is an integer number (717926706).

Almost surely, 2^16915680650 is an apocalyptic number.

16915680650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16915680650 is an abundant number, since it is smaller than the sum of its proper divisors (17544801238).

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

16915680650 is a wasteful number, since it uses less digits than its factorization.

16915680650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122807 (or 122802 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 16915680650 in words is "sixteen billion, nine hundred fifteen million, six hundred eighty thousand, six hundred fifty".