287998090497 has 36 divisors (see below), whose sum is σ = 450544345680. Its totient is φ = 177195841056.

The previous prime is 287998090487. The next prime is 287998090517. The reversal of 287998090497 is 794090899782.

It is not a de Polignac number, because 287998090497 - 2⁴ = 287998090481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287998090487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9687618 + ... + 9717300.

Almost surely, 2^287998090497 is an apocalyptic number.

It is an amenable number.

287998090497 is a deficient number, since it is larger than the sum of its proper divisors (162546255183).

287998090497 is a wasteful number, since it uses less digits than its factorization.

287998090497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36094 (or 36078 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 287998090497 in words is "two hundred eighty-seven billion, nine hundred ninety-eight million, ninety thousand, four hundred ninety-seven".