16968969680 has 40 divisors (see below), whose sum is σ = 42487692072. Its totient is φ = 6265465344.

The previous prime is 16968969671. The next prime is 16968969697. The reversal of 16968969680 is 8696986961.

It can be written as a sum of positive squares in 4 ways, for example, as 87684496 + 16881285184 = 9364^2 + 129928^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 16968969680.

It is a congruent number.

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, 8157119 + ... + 8159198.

Almost surely, 2^16968969680 is an apocalyptic number.

16968969680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16968969680 is an abundant number, since it is smaller than the sum of its proper divisors (25518722392).

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

16968969680 is a wasteful number, since it uses less digits than its factorization.

16968969680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316343 (or 16316337 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 68.

The spelling of 16968969680 in words is "sixteen billion, nine hundred sixty-eight million, nine hundred sixty-nine thousand, six hundred eighty".