16851001887673 has 2 divisors, whose sum is σ = 16851001887674. Its totient is φ = 16851001887672.

The previous prime is 16851001887427. The next prime is 16851001887739. The reversal of 16851001887673 is 37678810015861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10299818304889 + 6551183582784 = 3209333^2 + 2559528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16851001887673 is a prime.

It is not a weakly prime, because it can be changed into another prime (16851001887073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8425500943836 + 8425500943837.

It is an arithmetic number, because the mean of its divisors is an integer number (8425500943837).

Almost surely, 2^{16851001887673} is an apocalyptic number.

It is an amenable number.

16851001887673 is a deficient number, since it is larger than the sum of its proper divisors (1).

16851001887673 is an equidigital number, since it uses as much as digits as its factorization.

16851001887673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 61.

The spelling of 16851001887673 in words is "sixteen trillion, eight hundred fifty-one billion, one million, eight hundred eighty-seven thousand, six hundred seventy-three".