287649425865 has 16 divisors (see below), whose sum is σ = 460261411200. Its totient is φ = 153405583872.

The previous prime is 287649425863. The next prime is 287649425881. The reversal of 287649425865 is 568524946782.

It is not a de Polignac number, because 287649425865 - 2¹ = 287649425863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 287649425796 and 287649425805.

It is not an unprimeable number, because it can be changed into a prime (287649425863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138325 + ... + 770994.

It is an arithmetic number, because the mean of its divisors is an integer number (28766338200).

Almost surely, 2^287649425865 is an apocalyptic number.

It is an amenable number.

287649425865 is a deficient number, since it is larger than the sum of its proper divisors (172611985335).

287649425865 is a wasteful number, since it uses less digits than its factorization.

287649425865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930416.

The product of its digits is 232243200, while the sum is 66.

The spelling of 287649425865 in words is "two hundred eighty-seven billion, six hundred forty-nine million, four hundred twenty-five thousand, eight hundred sixty-five".