887641051673 has 2 divisors, whose sum is σ = 887641051674. Its totient is φ = 887641051672.

The previous prime is 887641051637. The next prime is 887641051697. The reversal of 887641051673 is 376150146788.

887641051673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (887641051637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708438689344 + 179202362329 = 841688^2 + 423323^2 .

It is a cyclic number.

It is not a de Polignac number, because 887641051673 - 2¹⁶ = 887640986137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (887641051573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443820525836 + 443820525837.

It is an arithmetic number, because the mean of its divisors is an integer number (443820525837).

Almost surely, 2^887641051673 is an apocalyptic number.

It is an amenable number.

887641051673 is a deficient number, since it is larger than the sum of its proper divisors (1).

887641051673 is an equidigital number, since it uses as much as digits as its factorization.

887641051673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 887641051673 in words is "eight hundred eighty-seven billion, six hundred forty-one million, fifty-one thousand, six hundred seventy-three".