16855801927 has 2 divisors, whose sum is σ = 16855801928. Its totient is φ = 16855801926.

The previous prime is 16855801909. The next prime is 16855801997. The reversal of 16855801927 is 72910855861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16855801927 - 2¹⁹ = 16855277639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16855801997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8427900963 + 8427900964.

It is an arithmetic number, because the mean of its divisors is an integer number (8427900964).

Almost surely, 2^16855801927 is an apocalyptic number.

16855801927 is a deficient number, since it is larger than the sum of its proper divisors (1).

16855801927 is an equidigital number, since it uses as much as digits as its factorization.

16855801927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 16855801927 in words is "sixteen billion, eight hundred fifty-five million, eight hundred one thousand, nine hundred twenty-seven".