287589316873 has 2 divisors, whose sum is σ = 287589316874. Its totient is φ = 287589316872.

The previous prime is 287589316867. The next prime is 287589316901. The reversal of 287589316873 is 378613985782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186168086784 + 101421230089 = 431472^2 + 318467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287589316873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287589316799 and 287589316808.

It is not a weakly prime, because it can be changed into another prime (287589316853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143794658436 + 143794658437.

It is an arithmetic number, because the mean of its divisors is an integer number (143794658437).

Almost surely, 2^287589316873 is an apocalyptic number.

It is an amenable number.

287589316873 is a deficient number, since it is larger than the sum of its proper divisors (1).

287589316873 is an equidigital number, since it uses as much as digits as its factorization.

287589316873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 67.

The spelling of 287589316873 in words is "two hundred eighty-seven billion, five hundred eighty-nine million, three hundred sixteen thousand, eight hundred seventy-three".