16000000844857 has 2 divisors, whose sum is σ = 16000000844858. Its totient is φ = 16000000844856.

The previous prime is 16000000844801. The next prime is 16000000844909. The reversal of 16000000844857 is 75844800000061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15973003397376 + 26997447481 = 3996624^2 + 164309^2 .

It is a cyclic number.

It is not a de Polignac number, because 16000000844857 - 2³¹ = 15997853361209 is a prime.

It is not a weakly prime, because it can be changed into another prime (16000000844957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000000422428 + 8000000422429.

It is an arithmetic number, because the mean of its divisors is an integer number (8000000422429).

Almost surely, 2^{16000000844857} is an apocalyptic number.

It is an amenable number.

16000000844857 is a deficient number, since it is larger than the sum of its proper divisors (1).

16000000844857 is an equidigital number, since it uses as much as digits as its factorization.

16000000844857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 16000000844857 in words is "sixteen trillion, eight hundred forty-four thousand, eight hundred fifty-seven".