287903262161 has 2 divisors, whose sum is σ = 287903262162. Its totient is φ = 287903262160.

The previous prime is 287903262137. The next prime is 287903262167. The reversal of 287903262161 is 161262309782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224136911761 + 63766350400 = 473431^2 + 252520^2 .

It is a cyclic number.

It is not a de Polignac number, because 287903262161 - 2¹⁸ = 287903000017 is a prime.

It is not a weakly prime, because it can be changed into another prime (287903262167) 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, 143951631080 + 143951631081.

It is an arithmetic number, because the mean of its divisors is an integer number (143951631081).

Almost surely, 2^287903262161 is an apocalyptic number.

It is an amenable number.

287903262161 is a deficient number, since it is larger than the sum of its proper divisors (1).

287903262161 is an equidigital number, since it uses as much as digits as its factorization.

287903262161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 287903262161 in words is "two hundred eighty-seven billion, nine hundred three million, two hundred sixty-two thousand, one hundred sixty-one".