287728465361 has 2 divisors, whose sum is σ = 287728465362. Its totient is φ = 287728465360.

The previous prime is 287728465313. The next prime is 287728465363. The reversal of 287728465361 is 163564827782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287262768961 + 465696400 = 535969^2 + 21580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287728465361 is a prime.

Together with 287728465363, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287728465361.

It is not a weakly prime, because it can be changed into another prime (287728465363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143864232680 + 143864232681.

It is an arithmetic number, because the mean of its divisors is an integer number (143864232681).

Almost surely, 2^287728465361 is an apocalyptic number.

It is an amenable number.

287728465361 is a deficient number, since it is larger than the sum of its proper divisors (1).

287728465361 is an equidigital number, since it uses as much as digits as its factorization.

287728465361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 59.

The spelling of 287728465361 in words is "two hundred eighty-seven billion, seven hundred twenty-eight million, four hundred sixty-five thousand, three hundred sixty-one".