287643965149 has 2 divisors, whose sum is σ = 287643965150. Its totient is φ = 287643965148.

The previous prime is 287643965123. The next prime is 287643965153. The reversal of 287643965149 is 941569346782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287349602500 + 294362649 = 536050^2 + 17157^2 .

It is a cyclic number.

It is not a de Polignac number, because 287643965149 - 2⁵ = 287643965117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287643965849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143821982574 + 143821982575.

It is an arithmetic number, because the mean of its divisors is an integer number (143821982575).

Almost surely, 2^287643965149 is an apocalyptic number.

It is an amenable number.

287643965149 is a deficient number, since it is larger than the sum of its proper divisors (1).

287643965149 is an equidigital number, since it uses as much as digits as its factorization.

287643965149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 287643965149 in words is "two hundred eighty-seven billion, six hundred forty-three million, nine hundred sixty-five thousand, one hundred forty-nine".