16708827691 has 4 divisors (see below), whose sum is σ = 16910138952. Its totient is φ = 16507516432.

The previous prime is 16708827649. The next prime is 16708827713. The reversal of 16708827691 is 19672880761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16708827691 - 2¹⁵ = 16708794923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16708827631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100655506 + ... + 100655671.

It is an arithmetic number, because the mean of its divisors is an integer number (4227534738).

Almost surely, 2^16708827691 is an apocalyptic number.

16708827691 is a deficient number, since it is larger than the sum of its proper divisors (201311261).

16708827691 is an equidigital number, since it uses as much as digits as its factorization.

16708827691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201311260.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 16708827691 in words is "sixteen billion, seven hundred eight million, eight hundred twenty-seven thousand, six hundred ninety-one".