16697879680 has 128 divisors (see below), whose sum is σ = 41307356160. Its totient is φ = 6447820800.

The previous prime is 16697879663. The next prime is 16697879701. The reversal of 16697879680 is 8697879661.

It is a tau number, because it is divible by the number of its divisors (128).

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, 11050125 + ... + 11051635.

It is an arithmetic number, because the mean of its divisors is an integer number (322713720).

Almost surely, 2^16697879680 is an apocalyptic number.

16697879680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16697879680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20653678080).

16697879680 is an abundant number, since it is smaller than the sum of its proper divisors (24609476480).

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

16697879680 is a wasteful number, since it uses less digits than its factorization.

16697879680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 67.

The spelling of 16697879680 in words is "sixteen billion, six hundred ninety-seven million, eight hundred seventy-nine thousand, six hundred eighty".