287889230097 has 24 divisors (see below), whose sum is σ = 475732248576. Its totient is φ = 164339715456.

The previous prime is 287889230093. The next prime is 287889230159. The reversal of 287889230097 is 790032988782.

It is a happy number.

287889230097 is a `hidden beast` number, since 2 + 87 + 88 + 92 + 300 + 97 = 666.

It is not a de Polignac number, because 287889230097 - 2² = 287889230093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (287889230093) 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 23 ways as a sum of consecutive naturals, for example, 2277073 + ... + 2400174.

It is an arithmetic number, because the mean of its divisors is an integer number (19822177024).

Almost surely, 2^287889230097 is an apocalyptic number.

It is an amenable number.

287889230097 is a deficient number, since it is larger than the sum of its proper divisors (187843018479).

287889230097 is a wasteful number, since it uses less digits than its factorization.

287889230097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678237 (or 4678234 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 287889230097 in words is "two hundred eighty-seven billion, eight hundred eighty-nine million, two hundred thirty thousand, ninety-seven".