287461164721 has 2 divisors, whose sum is σ = 287461164722. Its totient is φ = 287461164720.

The previous prime is 287461164667. The next prime is 287461164787. The reversal of 287461164721 is 127461164782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178729399696 + 108731765025 = 422764^2 + 329745^2 .

It is a cyclic number.

It is not a de Polignac number, because 287461164721 - 2¹¹ = 287461162673 is a prime.

It is not a weakly prime, because it can be changed into another prime (287461164421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143730582360 + 143730582361.

It is an arithmetic number, because the mean of its divisors is an integer number (143730582361).

Almost surely, 2^287461164721 is an apocalyptic number.

It is an amenable number.

287461164721 is a deficient number, since it is larger than the sum of its proper divisors (1).

287461164721 is an equidigital number, since it uses as much as digits as its factorization.

287461164721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The spelling of 287461164721 in words is "two hundred eighty-seven billion, four hundred sixty-one million, one hundred sixty-four thousand, seven hundred twenty-one".